Extreme Polytunnels 4m x 3.5m, 6m x 3.5m, 8m x 3.5m, High Side Extra Wide for the more serious grower. 32mm Frame, Full Height Bracing, Front & Rear Access. (4m x 3.5m Extreme Polytunnel)

UK-15961
£50.00 GBP
Quantity
Delivery & Shipping Policy
Returns & Refunds Policy
Frequently Asked Questions (FAQ)

Free UK Tracked Delivery
Enjoy 100% free delivery nationwide. Orders placed by 2:00 PM (GMT) are processed in 1–2 working days, arriving safely at your door in 4–9 business days.

28-Day Complimentary Returns
Zero-risk shopping with 28-day free returns. A pre-paid return label is already tucked inside your parcel, with absolutely no restocking fees.

Protected Card Checkout (GBP £)
Billed transparently in British Pounds (£). We exclusively support Visa and Mastercard with bank-grade 256-bit SSL encrypted protection.

Free UK Tracked Delivery
Enjoy 100% free delivery nationwide. Orders placed by 2:00 PM (GMT) are processed in 1–2 working days, arriving safely at your door in 4–9 business days.

28-Day Complimentary Returns
Zero-risk shopping with 28-day free returns. A pre-paid return label is already tucked inside your parcel, with absolutely no restocking fees.

Protected Card Checkout (GBP £)
Billed transparently in British Pounds (£). We exclusively support Visa and Mastercard with bank-grade 256-bit SSL encrypted protection.

Product Highlights

  • Choose 4m x 3.5m, 6m x 3.5m or 8m x 3.5m.
  • 4m x 3.5m (13' x 11.5' APPROX) - 32mm FRAME. EXTRA WIDE...A FULLY FUNCTIONAL STAND UP WORKING SPACE ACROSS THE WHOLE 3.5m WIDTH. SIX ROLL UP WINDOW VENTS (THREE PER SIDE).
  • FRONT AND REAR WIDE BARROW ACCESS ZIPPERED DOORS!
  • MAX FLEX TOLERANCE AGAINST WIND STRESSES...A HEAVY DUTY 32mm GALVANISED STEEL FRAME WITH FULL HEIGHT BRACING TO ALL CORNERS AND FULL GROUND BAR KIT...TO CREATE WHAT WE BELIEVE IS THE STRONGEST STRUCTURE "IN IT'S CLASS" ABOVE ALL OTHERS.
  • FULL RANGE OF SPARES AVAILABLE ON ALL OUR TUNNELS.

Specifications

  • Colour: Green
  • Cover material: Polyvinyl Chloride (PVC)
  • Nominal wall thickness: 1.85 millimeters
  • Number of doors: 2

Product Overview

Product description 4m x 3.5m (13' x 11.5' approx)...A Fully Galvanised Structure With More Functionality Than All Others. The Most Robust and Durable "High Eaves" Tunnel Range of it's type on Amazon! "Full Height Shoulder Diagonal Bracing Means Greater Strength"...This Structure Gives A More Durable Construct Against Wind Stresses! Designed & Built For The More Serious Grower. Allotment Master Extreme...Has Continually Evolved Into What We Believe Is "The Best Off The Shelf Structure On The Market Today"...Quality without Compromise! A Superior range of polytunnels incorporating a "High Eaves" straight wall design...which gives a fully functional stand up working space across the whole tunnel width (this differs from traditional design where stand up space is dictated by tunnel curvature). In addition, this tunnel has a 3.5m width (most tunnels max out at 3m widths) thus giving extra walk-in space and extra functional cultivating area. A fully galvanised 32mm diameter frame, full diagonal bracing to all corners..."shoulder to floor" (many others use "half wall bracing") and, full ground bar kit completes the structure...You Will Not Find A Better Build Quality On Amazon! 32mm Galvanised Frame | Full 2m Zippered Front and Rear Doors..."Wide Barrow Access!" | Walk In Height 1.90m, Floor to Shoulder Height approx 145cm | SIX Roll Up Window Vents (THREE Per Side) | Belt "n" Braces, Nut "n" Bolt and Locking Spring Pin Construction | Ground Bar Kit & Full Height Storm Bracing...Extreme Rigidity | Heavy 150g/sm UPVC "Rip Stop Cover" | All Spare Parts Stocked Separately | Fits Easily For Transportation By Car. Safety Warning Always use appropriate safety gear when handling heavy components. Ensure the greenhouse is properly anchored to prevent damage or injury during strong winds. Follow manufacturer's instructions for proper assembly, use, and maintenance. Always keep the greenhouse well-ventilated to prevent the buildup of harmful gases.

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