Polytunnel film. In each farm, 3–5 plastic polytunnel film samples and fertilizer samples were collected for analysis, and each sample collected was comprised of five subsamples in the same greenhouse. Polytunnel film

 
In each farm, 3–5 plastic polytunnel film samples and fertilizer samples were collected for analysis, and each sample collected was comprised of five subsamples in the same greenhousePolytunnel film  $ 650

40. Add to Cart. 8 meters wide Heavy duty product Thickness 180 Micron 720 Gauge. It is covered with polyethylene. Order: 500 Square Meters. 150/200micro PE Film: Get Best Price Mail Us. Fix it to the base rail or bury in a trench. Our 1. 410mm x 500m x 9mu – AGRI. Are you looking to purchase a polytunnel or fruit cage for your outside space? Here at LoveGardening. The film transmits the full spectrum of UV light that plants get naturally. 4Ft. 4. 0 pieces. Transparent material, 3 mesh windows and a zipper door in each end. When thinking about the cost of a polytunnel there’s a very simple and obvious rule; the larger the tunnel the higher the cost. A 38mm diameter (grade Z35) high tensile galvanised steel framework gives the polytunnel its core strength, essential in our exposed position hammered by wind and storms. 38 £39. 5 out of 5 stars 383. Keep in mind, the longer the polytunnel, the more it will need to be braced for additional support. It has the best and longest lasting anti condensation system available, and the highest level of frost protection available in a film. Clear any stones from the ground and unroll the cover, sliding it over the hoops so it sits evenly over the frame. Structure: Hot Galvanized Steel with 275G/M2. 10m - €17. This comes with an 8 year warranty and is slightly thicker at 180 microns. We. Dengmore Clear Plastic Film Greenhouse Polyethylene Covering Greenhouse Film for Home. PROMORE Clear Greenhouse Polythene Sheet 3. VonHaus Polytunnel Greenhouse - Walk-In Polytunnel Tent with Steel Frame. At National Polytunnels, sales manager Gary Summerfield says multi-span tunnels are selling extremely well. The color of the plastic film is transparent, light transmittance is greater than 90%, and the thickness is only 0. This novel film technology will increase yields of many other. That is the large walk in frame tunnels covered in plastic sheeting for growing a wide variety of crops from lettuces to tomatoes and raspberries. There’s plenty of scope when it comes to herbs, too—Rosemary, sage, thyme, and oregano work especially well in polytunnels. 12ft Wide Polytunnel. There are several factors to consider when selecting polythene to maximise crop performance. Carrying out such maintenance not only ensures the best growing conditions are kept, it helps stop pests and damage to produce from the elements too. Add to basket. 2 B). alibaba. Polytunnels work out much cheaper to buy, maintain and install than greenhouses and are quite easy to put up and manoeuvre yourself. Overview. The width of polytunnels ranges from 3m to 9m. With XL designed doors and vents you can use polythene instead of expensive woven and coated materials. Sort By. Reviews. Best selling items that customers love. Size: Large. 99. Any good polytunnel is far less expensive than a greenhoouse of the. It has the best and longest lasting anti condensation system available, and the highest level of frost protection available in a film. Avoid construction grade material that has less strength. Buy your greenhouse here. 600x300x200 Home Garden Backyard Polytunnel Greenhouse Portable Mini Tunnel Plastics White / Green PE Film Green Houses for Sale $ 69 . Garden Cloche Film, 480 gauge/120 micron. Order: 500 Square Meters. Quick view Add to Cart. We even offer rolls with greenhouse film so you can make your own frame and cover it with the right sort of film to make you own DIY polytunnel greenhouse. Our main products comprise Glass Multi-Span Greenhouse, PC-sheet Multi-Span Greenhouse, Plastic-film Multi-Span Greenhouse, Plastic Shed, and Solar Greenhouse etc. Show per page. They create a greenhouse effect for the plant inside by keeping the temperature controlled inside. Robinson Polytunnels supply a range of polytunnel polythene for re-sheeting your polytunnel. Ample headroom. The product will supply to all over the world, such as Europe, America, Australia,, ,, . Please enter the number of meters required in the quantity box (min order 11m) Example: you require a replacement sheet 11. Polytunnel Kit For Sale In Australia. Polytunnels are very flexible when it comes to size. SunMaster SuperThermic EVO AC is our new 8 layer polytunnel film. Polytunnel, Small Dole, England Photo by Steve Law, Brighton Plants Author of the four volumes of Fruition Poly Tunnels. In recent years, significant quantities of film have been shipped to China for recycling, but this outlet recently closed when the Chinese stopped accepting used film. Take a look at the Premier Polytunnels 27ft Wide Commercial Polytunnel - ready to assemble and complete with all essential additions. Preparation for garden season in spring. - The Super Strength Galvanised Steel Hoops are 4. We have strict quality control procedures for each process. Polyair. Ventilation: Side/Roof Ventilation. . For the first 4ft 6in (1. To help fill the gap created, RPC bpi horticulture has teamed up with. Contact Us. Insulation Film & Fittings. com offers 2,024 polytunnels products. Thirty-three samples were collected from Hushu (HS) where the typical production system comprised vegetables and flooded rice in rotation for about 4 years ( Fig. Our polytunnel belonged to my father in law, the plastic is going on 15/20 years now and if still fine, and he never looked after it either so it could have been in better shape. 5mm thick (others use 1. comXL's plastic clips are designed for fixing wind up side vents or doors on to thick wall 25mm steel tube. Choose from the following polytunnel replacement covers: 600 gauge/150 micron polythene film with a 4-year warranty against UV degradation, or a 720 gauge/180 micron polythene film with an extended 5-year warranty. Three irrigation water samples were collected in. The study area is situated in Shouguang City, Shandong Province, as the largest greenhouse vegetable production base in Northern China. 3 Plastic greenhouses, comprising of plastic tunnels and solar greenhouses (Figure 1), covered. 99. 4. Holes diameter 6/8/10cm. This comes with an 8 year warranty and is slightly thicker at 180 microns. (only in German language)Monstershop Polytunnel 25mm 3m x 2m. Greenhouses, on the other hand, are much more difficult to expand or change once they’re constructed. To secure it you can either attach it to the base rail if you have one (as most pre-made kits will), or simply bury a skirt of polythene in a trench approximately 30cm deep. Feature: * brand new and high quality *Widely used in greenhouse or yard greenhouse for vegetables, flowers, fruits and agricultural cultivation, etc. This can have many benefits for both edible and ornamental crops, such as enhancing the fragrance, taste, colour, earlier harvesting and longer post-harvest shelf life. Dancover PLC UK - Nordre Strandvej 119A. A detailed walk-through of my polytunnel build, including every major step, with explanations and footage. Typically, commercial polytunnels employ films that are 150-200 microns thick. Here at Premier Polytunnels we sell a clear Thermal Anti Drip polythene cover as standard. The 18ft wide polytunnel is a good size for a commercial polytunnel, though it could also be a large domestic one. Affordability: Polytunnels are a cost-effective option for small-scale growers and those on a budget, as they are easy to construct using readily available and inexpensive materials, such as PVC pipe and polyethylene film. Free postage. Rather than being oxy-degradable, our new Polyair material is bio-based. 3M Wide Diffused Price per running meter. This comes with an 8 year warranty and is slightly thicker at 180 microns. If you use decent polytunnel film that shit lasts for ages. $60. SunMaster SuperThermic EVO AC is our new 8 layer polytunnel film. 20ft Wide Polytunnels. They. This is a 600 gauge/150 micron polythene film with a 4-year warranty against UV degradation and is the preferred cover of UK growers - supplied as standard with our. 75cm Wide Heavy Duty Plant Cloche Polytunnel Caterpillar Tunnel With Poly Film. Preparation for garden season in spring. 00. When polytunnels are well taken care of, you can expect the cover to last for a minimum of 4 to 5 years, stretching over and above to 8 to 10 years. Each leg has a horizontal steel anchor plate that is buried into the soil. PRICE FROM 30 EURO FREE DELIVERY. This specialist Visqueen film reduces light transmission to 65%, and ultimately the temperature inside the structure. Polytunnels are a tool used by farmers, large scale vegetable producers, and also individuals who wish to grow their own. THICKNESS. Atoke 2M X 10M Extra Thick Polythene Plastic Sheeting,Anti-dust Furniture Cover,Clear Garden Grow Polytunnel Cover Sheets for Greenhouse,Agriculture,Garden,Painting Work. I just built a polytunnel with pvc pipes and special greenhouse film. Add to Cart. Bubble Film Roll 1. Industrial Manufacturer Frames Plastic Film Polytunnel Single-Span Tunnel Agricultural Greenhouses Used For Sale $ 3 . More than 40 years of experience in professional gardening are included in this special polytunnel. Polytunnel Polythene Film / Replacement Cover 9. Due to perforations in this plastic film it can expand as the leaves grow tall, creating a great growing environment for your salad leaves. Life Expectancy: 7 - 8 Years and 5 Years UV Guarantee, 720 Gauge as well as, ~91% Light Transmission. Still to get it in the exact position and dig in the cover. Closeup. The Allotment Polytunnel gives seasoned growers everything they need to make their own ideal growing space. 6m length roof vent. This UV stabilised film is 200 microns (800 Gauge) and is supplied with a five year guarantee. Parallel or alternate. Of course, there are exceptions to every rule. Anti-fog/anti-drip layer lasting lifetime of the polythene. 410mm x 500m x 8mu – Standard. Polytunnel Film. USA: Spinning in a poly film greenhouse: studio holds outdoor classes in greenhouse. Horizontal brace bars for 12ft wide tunnel approx $72 per bay plus freight. Available widths: 8m - €15. On the other hand, planting directly in the ground refers to the traditional method of planting seeds or seedlings in soil without any additional structures or. 17 +$10. The tunnels are made semicircular and elongated in shape. 96 £16. In Stock. Fix it to the base rail or bury in a trench. Call us now to find out how Polythene UK can help you on 0845 643 1601*. 1. 2022 Gutter Connected Polytunnel Film Multi Span Greenhouse Made In China , Find Complete Details about 2022 Gutter Connected Polytunnel Film Multi Span Greenhouse Made In China,Gutter Connected Greenhouse,Polytunnel Greenhouse,Greenhouses from Multi-span Greenhouses Supplier or Manufacturer-Shandong Yading International Trade. Polytunnels are available for sale from the following suppliers. $15. Greenhouse Film. Contact Us;. We set up our business with precision and win with quality, and look forward to cooperating with you. USA: Spinning in a poly film greenhouse: studio holds outdoor classes in greenhouse “With impending colder weather, we have invested in a 34′ x 96′ greenhouseOur Premier Polytunnels 18ft Wide Commercial Polytunnels provide ample headroom with a wide selection of additions available. 470mm x 300m x 17mu – Fleur. Having said that let’s get straight to the heart of the matter. Contact Us; Delivery and Returns;. Young adult man hands stretching new polythene film on greenhouse metal profile carcass. This tape is excellent to wrap around clamps and steel tube ends to prevent any damage to the polythene cover. 00 Min Order: 100. Hand film sizes. Horticultural bubble wrap retains the heat and blocks draughts. Thicknesses: 12. To calculate the amount required for an existing polytunnel throw a tape measure over the frame to measure the hoop circumference from ground level to ground level then add 2m to allow. The super thermic 200-micron polytunnel cover is our most popular sheet for covering structures. Five subsamples of fertilizer were collected at different sites/depths from a pile (or bag) of fertilizer. Polytunnel Polythene Films. Use SuperThermic EVO AC for all crops where frost protection is important. 1,B District of XinDu Industrial Park, JiuLong Road, XinDu District, ChengDu City, Sichuan Province, China. It also scatters light entering the polytunnel. Components and Accessories. Standard hoop diametre ranges from 25 - 32mm. Options +7 options. polytunnel stock pictures, royalty-free photos & images Our huge buying power as the UK’s largest polytunnel manufacturer makes SuperLux 50:50 the most economical polytunnel film available in the UK. If a 16ft polytunnel is just the right size, not too big and not too small, then you have come to the right place. 5m Long (2in x 15ft). SUNVIEW Greenhouse Clear Plastic Film Polyethylene Covering Gt4 Year 6 Mil 12ft. Options from $8. VonHaus Polytunnel Greenhouse - Walk-In Polytunnel Tent with Steel Frame. What is Agricultural Polytunnel Film Greenhouse with Good Installation Service for Tomato Planting, Greenhouse manufacturers & suppliers on Video Channel of Made-in-China. X 25ft. This film allows 65% light transmission Canopy plants have absorbed much of the red spectrum and so plants that have evolved and adapted to grow in these conditions, don't do as well in full sun. Learn how to easily splice polyethylene plastic sheets to replace or repair cover on high tunnel, polytunnel, hoop house, or greenhouse. Please contact us for more details. com. Polyshade tunnels have quality commercial grade knitted 30% shadecloth in white colour fitted to the end walls and the door as standard. Our innovative technology allows for maximum efficiency with minimal environmental impact. Delivery. Details on how to measure your tunnel below. $69. Get in touch with us. The following gives recommendations of use, and factors, which will limit the life of the polytunnel film and the efore the extent of our guarantee. Add to Cart. Even if nibbling insects aren’t a problem, polytunnels can keep rabbits, deer and kids out of your garden. Add to Cart. Young adult man hands stretching new polythene film on greenhouse metal profile carcass. 92 £18. com +44 0800 772 0568; Areas Covered;. SunMaster SuperThermic EVO AC is our new 8 layer polytunnel film. 99. The film is 3 ply, UV stabilised and has high light transmission. $6. More or less expensive ones. Take your pick from high-tech, 5-layer, thermal anti-drip polytunnel covers that include additives to reduce the risk of fungus bacteria in. 5m wide x 50m, UV stabilised bubble insulation film is very effective, helping to keep an unheated polytunnel frost free so greatly reducing fuel/electricity consumption in a heated greenhouse or polytunnel, saving up to 50% on heating costs! The material is UV stabilised and is made from 25mm bubbles, (beware of packaging. You can request a free sample of our flame retardant polythene sheeting before committing to purchase for your product packaging. 00 (inc. We stock greenhouse films in the following widths – 5. Poly-Tex High Tunnel greenhouses are a quick and inexpensive way to lengthen your growing season, protect your crop from pests and disease, decrease water usage, and increase your crop yield. 56x16. FOB Price: US$ 9-20 / Square Meter. It provides a controlled environment for growing plants and can extend the growing season. available for orders up to £1,000. The specially developed cover. 00 - $ 179 . . Can be retrospectively fitted to an existing polytunnel. Add to basket. Both versions are covered with a film that. com. UV-4 product stabilized for min 4 seasons. 47 shipping. Greenhouse plastic on its own has very little insulation value, however, inflating the air in between two layers of greenhouse plastic will provide additional insulation and improve a structures ability to retain temperatures through cold nights. Min Order: 100. A new polytunnel film recycling scheme is providing UK growers with an alternative solution for recycling. 1 reviews. A 10ft wide polytunnel is a popular choice for home gardeners and allotment holders. Please contact us for more details. Call us on 0 203 936 8258 and 0 870 820 0008, Monday - Thursday 7:30 AM - 5:00 PM, Friday 7:30 AM - 4:00 PM, E-mail: uk@dancover. Polytunnel greenhouse providing perfect growth conditions for all kinds of plants – fruits, vegetables and flowers. There is a 14cm tear in the plastic about 1. Thanks to a low price, it is entirely or partially replaced if a particular segment has been damaged. That has a positive and progressive attitude to customer's interest, our organization consistently improves our products quality to satisfy the demands of shoppers and further focuses on safety, reliability, environmental specifications, and innovation of. Produces higher-yielding plants with stronger than normal. FOR USE WITH:. high-quality greenhouse film. Timber Sliding Doors are supplied for each end of the polytunnel, Anti Hot Spot Tape and of course the Framework to support the 200 micron Smart Clear Polythene cover. 3m, 9. A major benefit will be increased yield: just a 5% increase in strawberry yield would generate an additional 3 tonnes of fruit per hectare, worth an extra £25m per annum for the UK soft fruit industry. Polytunnel greenhouses are the economic and effective solution . *Supply perfect growing conditions-light, temperature, humidity-for plants&crops to improve yield and quality and protect from the bad weather & enjoy longer growing seasons *Superior. . Polytunnel as the name suggests is a tunnel made of PE film. The polyethylene or polythene film most commonly used biodegrades naturally over a long period. Find varieties of elegant wholesale polytunnel frame. A polytunnel is a tunnel-like structure that first appeared in the 1960s. 37m) up from ground level, the hoops are completely vertical, giving you more choice and workable options for a variety of path layouts, and the space to introduce raised beds. A polytunnel usually consists of a metallic, plastic, or wooden frame, covered with polythene or other similar materials. SunMaster SuperThermic EVO AC is our new 8 layer polytunnel film. FOB Price: US$ 9-20 / Square Meter. Propagation equipment, greenhouses, greenhouse film, shadecloth, fertilizers, misting and fogging, heating & cooling, benching, shelving, trolleys and barrows, Javo potting machines and more. For fresher, quality produce, choose our Ventilated Stretch Film and find out why we are one of the best vented stretch film manufacturers. They create a greenhouse effect for the plant inside by keeping the temperature controlled inside. , page1. It is possible to order a. Earlier crops With a polytunnel, the so-called hungry gap in spring isn’t as noticeable. £. Min. The aforementioned ISO 9001 certificate, which the polythene we offer give us guarantees long-term use and ensures that the proposed film for the polytunnel and garden greenhouse is resistant to mechanical damage or external factors 8ft Wide Polytunnel. 00. Heavy duty commercial grade polytunnels in all sizes for all budgets. 85m above the ground. The film is made of plastic, with optimal light diffusion. You can personalise your tunnel with many optional extras to ensure your Polyshadehouse matches your location and your crop growing needs. Structure: Hot Galvanized Steel with 275G/M2. comPolytunnels first appeared in the 1960’s once the plastics industry managed to produce reliable wide width polythene sheeting. Size: Large. Choose the polytunnel cover. It’s not just fruits and vegetables that you can grow, either. Choose from a selection of plastic frame. 10. The 6m through to 12m length tunnels include a 1. com. Polythene. 00 to £479. Customise your 24ft wide polytunnels with lots of additional options available such as length, cover type, irrigation, ventilation, door type and much more. Simply select the 16ft option and you will be able to choose to purchase a polytunnel kit containing everything you need to make a tunnel of just that size. current price $8. Benefits: Enables good plant growth right up to the glass; High clarity & UV stabilized; 3 Ply (Double skin) Reduces wind chill; Proven fuel savings; Easy to clean; Bubble Size: 20mmOrdinary polyethylene film liners are like virtually all polymers, very electrically insulating and prone to generation of high electrostatic charge accumulation and risk of incendiary spark. This is a 720 gauge/180 micron polythene film with a 5-year warranty against UV degradation and is the preferred cover of UK growers - supplied as standard with our Dream Polytunnel Package. Find the competitive price of polytunnel greenhouse film, hobby greenhouse kits, walk in greenhouse, plastic sheeting, caution tape, drop cloth, furniture cover in here. $8. Our 18ft wide polytunnels are perfect for farmers and professional food producers. over 16 years experiences in manufacturing and designing, so our products featured with best quality and competitive price. “We pre-plant applied most of our nitrogen (N. Film: Gutter height: 3. Simply Enter quantity. 00. We venture into the world of polytunnel recovering services, examining the various grades and types available, while unpacking linked terms such as UV stabilisation, microns, and. - plastic poly tunnel stock pictures, royalty-free photos & images. 4Ft. Greenhouse Garden Polytunnel Grow Tunnel Vegetable Allotment 0. I recommend you choose 720 gauge, or 180 microns, commercial-grade polythene. 63. 5-layer polythene film making for the most efficient polytunnel cover. In each farm, 3–5 plastic polytunnel film samples and fertilizer samples were collected for analysis, and each sample collected was comprised of five subsamples in the same greenhouse. 83m) Wide Polytunnel configuration page. This is very hard wearing and UV stabilised. 3x stronger than our strong Easy Build and come as 50mm as standard. 56x16. 00 EMAIL US. We stock standard polythene films & covers as well as Lumisol Diffused Polythene that comes with a 5-year guarantee from UV degradation. The UV open characteristics of this film means that plants grow as sturdily as they would if outside. Dancover PLC UK - Nordre Strandvej 119A. 5m - €20. The Polythene for the garden polytunnel we offer is produced using the COEX-3 technology. DiffusionYoung adult man hands stretching new polythene film on greenhouse metal profile carcass. Our polytunnel greenhouse range. Our 20ft wide polytunnels, whatever length you choose to make them, will help you to optimise your commercial growing area and make the most of all your resources. All of our 6 mil Greenhouse Poly comes pre-folded and rolled up on a hollow cardboard cylinder. 6m length roof vent. 3m wide x 12m long. Feature: *100% brand new and high quality *Widely used in greenhouse or yard mini greenhouse for vegetables, flowers, fruits and agricultural cultivation, etc. The anti condensation feature helps prevent condensation droplets from forming on the inside surface and dA Polytunnel is a cost effective alternative or addition to a greenhouse and one of the most popular sizes in our range of polytunnels is the 8ft (2. If you're interested in erecting a polytunnel your. Toggle menu. The cover can either be an Anti-drip or Thermal Rose Horticraft Greenhouse plastic film. Here at Premier Polytunnels we sell a clear Thermal Anti Drip polythene cover as standard. Harrod Polytunnels use a high quality galvanised steel framework and a polytunnel film that is guaranteed for 5 years and has been designed specifically for the UK where low light levels are common. Please note our commercial polytunnel greenhouse with a cover in two layers of film. Optional Features: Single door/s (dependent on width of THK) Hortitech Handyscreen Cover in 50% or 70% block-out, allowing for easy application and removal for temperature control; Side-wall wind-up curtains (dependent on width of THK) Polytunnel Cover/Sheeting | Clear Polythene Greenhouse Tunnel | 7. au. Type: Multi-Span Agricultural Greenhouses. Feature: *100% brand new and high quality *Widely used in greenhouse or yard mini greenhouse for vegetables, flowers, fruits and agricultural cultivation, etc. The tunnel houses you can buy have various options for ventilation including louvres, roof vents and doors. This film has an inside and an outside. 133m (7ft), creating a well-structured frame for the Horticraft Greenhouse plastic film. These can be manufactured according to the end usage. Cover, protect and warm your crops and plants from frost, wind and heavy rain. 45m x 3m x 0. We stock widths of. You can personalise your tunnel with many optional extras to ensure your Polyshadehouse matches your location and your crop growing needs. polytunnel incl. Polytunnel Film for making a Polytunnel. Source for greenhouse, garden greenhouse, polytunnel, hobby greenhouse here. Only 4 left in stock - order soon. We offer high-quality polytunnel greenhouses with frames made of galvanised steel tubes or even hot-galvanised steel covered with a sturdy polytunnel greenhouse film or cover. Lumisol CLEAR Polytunnel Cover - Per Mtr. XL. GreenlifeGRO provides greenhouse solutions to farmers and growers to help shield their crops while increasing yields. FREE delivery Tue, May. Get it Apr 17 - May 8. Roll size 50mm Wide x 4. . Our brand-new Greenhouse film product line, Hytilux, offers the best available UV stabilisers to ensure a durable, long lasting cover. It promotes anti-oxidants that help in growing the plants. Deep water culture, ebb and flow, and nutrient film technique are all recirculating systems, while. The Polytunnel initially started as a project that Marco could dip in and out of between other work, simultaneously evolving within the seasons. Please contact us for more details. The. Remember the durability of a material can also make it a more environmentally friendly option. Polyair is made from sugar cane, and it’s the process of photosynthesis as the plant grows that makes this product carbon neutral. Then screw the board up into the poly. The amount of available light entering the polytunnel through the film. 3m up the length (see photo) THere are a couple of 'bits' left over too from when I made my polytunnel. Contact Us;. A polytunnel can open up a world of possibility for your garden. We are the leading polytunnel manufacturer in the UK and, by buying direct from ourselves, you get a far higher quality product at a much lower price compared to buying from a high street or. Tarpaulin Covers and High Quality Polytunnel Plastic Greenhouse Covers Huge rang of Braided Polyester ropes and aluminium foil Insulation . 2 year warranty against UV. SunMaster SuperThermic EVO AC is an 8-layer polytunnel film. 4. 5. 6m length roof vent. Read More (opens in external tab) White UVI Polythene produces shade and reduces daytime temperatures, allowing 60-70% light transmission. 4. Adjust the plastic so it will create a tight seal on the roof and sides of your polytunnel. In simple terms the diffused polythene helps trap and preserve higher temperatures inside the structures for much longer - in heated structures, a 15-20% fuel savings can be achieved. Polytunnels are lower cost per square metre. They maintain growing conditions in this way, polytunnels are. It is a good choice for seasonal greenhouses, overwintering. 99 EURO FREE DELIVERY. And with nine feet of head room you can work in comfort and expand the variety of crops you produce. Closeup. Poly-Tex High Tunnel greenhouses are a quick and inexpensive way to lengthen your growing season, protect your crop from pests and disease, decrease water usage, and increase your crop yield. Delivery.