--- product_id: 55340257 title: "6m x 3m Polytunnel \"Strongest In It's Class\" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders" brand: "crocodile trading" price: "£405.98" currency: GBP in_stock: false reviews_count: 8 url: https://www.desertcart.co.uk/products/55340257-6m-x-3m-polytunnel-strongest-in-its-class-a-fully store_origin: GB region: United Kingdom --- # 4 diagonal + 3 roof braces 12 lateral vents for airflow 25mm galvanized steel frame 6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders **Brand:** crocodile trading **Price:** £405.98 **Availability:** ❌ Out of Stock ## Summary > 🌱 Grow stronger, grow smarter — the polytunnel that means business! ## Quick Answers - **What is this?** 6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders by crocodile trading - **How much does it cost?** £405.98 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/55340257-6m-x-3m-polytunnel-strongest-in-its-class-a-fully) ## Best For - crocodile trading enthusiasts ## Why This Product - Trusted crocodile trading brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Assembly:** All bolted construction with aligned holes & included spanner kit - • **Bonus Grow Guide Included:** FREE expert Polytunnel Grow book to maximize your harvest - • **Optimized Ventilation System:** 12 lateral vents + double zip door for perfect airflow control - • **Unrivaled Structural Strength:** 4 diagonal & 3 roof braces deliver industry-leading stability - • **Premium Galvanized Steel Frame:** Robust 25mm, 0.8mm thick steel resists corrosion & wind ## Overview The 6m x 3m Polytunnel features a fully galvanized 25mm steel frame with 4 diagonal and 3 full-length roof braces, making it the strongest in its class. Designed for superior stability and ventilation, it includes 12 lateral vents and a double zip-fastened door. Assembly is straightforward with all bolted connections and clear instructions. Comes with a free Polytunnel Grow book to help you achieve spectacular seasonal harvests. ## Description Product description The Allotment Master 6 m x 3 m (20 ft) polytunnel...and a 10ft Tunnel design with a strong structure for protection against winds.This tunnel will help you grow spectacular harvests of fruit and vegetables throughout the seasons. Allotment Master Specifications: The strongest in its class, in galvanised steel for greater stability.----Jane Lane nurseriesFor all other sectors:- Safety Warning Always wear appropriate protective clothing and gloves when handling the greenhouse. Be cautious of sharp edges and heavy components during assembly and maintenance. Ensure the greenhouse is properly anchored and ventilated to prevent damage or injury. Follow all assembly and maintenance instructions carefully. Review: Excellent value. - Excellent. Strong. Straightforward to assemble. This is our second tunnel and a good one. No problems assembling - just a bit of thought needed. Review: but all frame holes lined up easily, and the Allen headed bolts tightened securely with ... - This is the third 6 metre poly tunnel I have bought via desertcart, the others being the "Palm Springs" and the "Polly Poly" tunnel.This boldly claims to be the strongest, and it does have a central roof strut the others lacked, which makes a dramatic improvement to overall stiffness of the frame, and prevents the inevitable build up of water on the roof, if the cover is less than drum tight.Another very thoughtful feature, are the vertical holes around the base, which permit pegging the structure down, without tearing the cover.The tube itself however, is not unusually strong, and decidedly lighter duty than the "Palm Springs" version, though this has one less hoop.This tunnel also starts to curve in much lower than the "Palm Springs", slightly reducing the usable floor area with taller plants.The all bolted construction is slower to assemble than the usual spring loaded pins, but all frame holes lined up easily, and the Allen headed bolts tightened securely with the supplied spanner and key, and more easily than struggling with a spanner and screwdriver or pliers.A good tip, is to only do up the bolts finger tight initially, as they can be fully tightened so much easier, when the whole structure is standing Unfortunately the labelling was a complete mess, with the numbers mostly missing, and one puzzlingly on the wrong component ! Anyone not familiar with greenhouse construction, would have been baffled. The cover was a perfect fit, unlike the "Palm Springs",which never did zip up properly, but unfortunately only has a door in one end, which makes it more awkward to slide over the frame in a confined space, as you are not dealing with a flat sheet.In my case I realized this too late, and after struggling for half an hour to fit the cover, had to take it off and turn it around.The unbranded zips look robust, but lack the proven quality of the "YKK" examples on the "Polly Poly Tunnel".The seams were accurately sewn, but this cover is without the generous reinforcement of the "Polly Poly Tunnel", and the attachments for the guy ropes, look so flimsy as to be useless.The gauge of the polythene is only 150 gm, and certainly no heavier duty than any cheap tunnel.The side windows are only held shut by very small pieces of Velcro, and look like a weakness in rough weather.The worst feature of the cover is the miserly overlap all around, of less than 6 inches.As this is the main thing holding the tunnel down, why are all these allotment tunnels so penny pinching in this vital area? What is more annoying, the instructions specify a 12 inch deep trench, promising a generous overlap.This involved two hours of arduous digging through stony and tree root filled soil, when half a spade depth would have sufficed. To sum up, a thoughtfully designed and nicely made frame, seriously compromised by an average cover, which needs reinforcing and sensible overlap. ## Features - 2 corner reinforcement braces (instead of 2).7-Part frame arched with 2 horizontal support spacers and not two. - Replacement sheets, seals and poles are available. - 25 mm galvanised steel frame, 0.8 mm thick with assembly instructions (may not be in English). - 12 lateral vents, double zip fastened door, reinforced sheet with flaps to ensure the stability of the tunnel. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00Q4TVDRK | | Customer Reviews | 4.0 4.0 out of 5 stars (72) | | Date First Available | 11 Jan. 2015 | | Indoor/Outdoor usage | Outdoor | | Item model number | 5060216034805 | | Manufacturer | BGSL | | Number of doors | 1 | | Number of vents | 12 | | Part number | PT0001 | | Product Dimensions | 600 x 300 x 200 cm | | Size | 6 x 3 m | | Special feature | Enhanced stability and ventilation features | ## Product Details - **Brand:** Crocodile Trading - **Colour:** green - **Cover material:** Polyethylene (PE) - **Frame material:** Alloy Steel - **Nominal wall thickness:** 25 mm ## Images ![6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders - Image 1](https://m.media-amazon.com/images/I/41GQXX2zLwL.jpg) ![6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders - Image 2](https://m.media-amazon.com/images/I/41o8QbCFfPL.jpg) ![6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders - Image 3](https://m.media-amazon.com/images/I/51u5LEi+c7L.jpg) ![6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more internal bracing than all other similar tunnels! 4 Diagonal Bracing NOT 2, 3 Full Length Roof Bracing NOT 2. FREE PolyTunnel Grow book with all orders - Image 4](https://m.media-amazon.com/images/I/51z+aqSjOEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent value. *by C***S on 19 April 2017* Excellent. Strong. Straightforward to assemble. This is our second tunnel and a good one. No problems assembling - just a bit of thought needed. ### ⭐⭐⭐⭐ but all frame holes lined up easily, and the Allen headed bolts tightened securely with ... *by J***N on 3 June 2015* This is the third 6 metre poly tunnel I have bought via Amazon, the others being the "Palm Springs" and the "Polly Poly" tunnel.This boldly claims to be the strongest, and it does have a central roof strut the others lacked, which makes a dramatic improvement to overall stiffness of the frame, and prevents the inevitable build up of water on the roof, if the cover is less than drum tight.Another very thoughtful feature, are the vertical holes around the base, which permit pegging the structure down, without tearing the cover.The tube itself however, is not unusually strong, and decidedly lighter duty than the "Palm Springs" version, though this has one less hoop.This tunnel also starts to curve in much lower than the "Palm Springs", slightly reducing the usable floor area with taller plants.The all bolted construction is slower to assemble than the usual spring loaded pins, but all frame holes lined up easily, and the Allen headed bolts tightened securely with the supplied spanner and key, and more easily than struggling with a spanner and screwdriver or pliers.A good tip, is to only do up the bolts finger tight initially, as they can be fully tightened so much easier, when the whole structure is standing Unfortunately the labelling was a complete mess, with the numbers mostly missing, and one puzzlingly on the wrong component ! Anyone not familiar with greenhouse construction, would have been baffled. The cover was a perfect fit, unlike the "Palm Springs",which never did zip up properly, but unfortunately only has a door in one end, which makes it more awkward to slide over the frame in a confined space, as you are not dealing with a flat sheet.In my case I realized this too late, and after struggling for half an hour to fit the cover, had to take it off and turn it around.The unbranded zips look robust, but lack the proven quality of the "YKK" examples on the "Polly Poly Tunnel".The seams were accurately sewn, but this cover is without the generous reinforcement of the "Polly Poly Tunnel", and the attachments for the guy ropes, look so flimsy as to be useless.The gauge of the polythene is only 150 gm, and certainly no heavier duty than any cheap tunnel.The side windows are only held shut by very small pieces of Velcro, and look like a weakness in rough weather.The worst feature of the cover is the miserly overlap all around, of less than 6 inches.As this is the main thing holding the tunnel down, why are all these allotment tunnels so penny pinching in this vital area? What is more annoying, the instructions specify a 12 inch deep trench, promising a generous overlap.This involved two hours of arduous digging through stony and tree root filled soil, when half a spade depth would have sufficed. To sum up, a thoughtfully designed and nicely made frame, seriously compromised by an average cover, which needs reinforcing and sensible overlap. ### ⭐ Disappointing pollytunnel 100%rubbish need replacement *by T***Y on 2 January 2020* Wasn't enough nuts and bolts 3 short Also holes in the framework didn't match up had to rebore them also stays to hold into the ground unusable need to be at least three eighths by18 - 24 inches long your articles for holding it in place is rubbish because of wind framework is completely racked was put up as instructions Sayed cover put into ground 12 inches as instructed also because I put 18 inch pins in the base stayed in place otherwise it would have completely disappeared need you to send me a new one won't let me put photos up I want to framework all bent --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/55340257-6m-x-3m-polytunnel-strongest-in-its-class-a-fully](https://www.desertcart.co.uk/products/55340257-6m-x-3m-polytunnel-strongest-in-its-class-a-fully) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-20*