4 x 3m Polytunnel Greenhouse with Steel Hinged Doors and Eight Mesh Windows Galvanised Steel Frame Green

Transform your garden or allotment into a productive growing space all year round with this robust 4 x 3m polytunnel greenhouse. Built around a galvanised steel frame reinforced with four additional roof brace bars and clad in 140 g/m2 UV6-coated PE sheeting, it offers a weatherproof, light-filled environment for vegetables, seedlings, and tender plants season after season. Two people or more are recommended for assembly.

• Wind-tested galvanised steel frame uses 25 mm and 19 mm tubing plus four extra roof brace bars, rated to withstand level 6 winds when anchored correctly - giving you confidence it will stay put through a British winter.
• Two solid steel hinged doors with latch-and-catch closures provide a wide, reliable entry on both ends, making it easy to wheel in barrows, carry trays, and move tall plants without having to stoop or struggle.
• Eight 35 x 35 cm mesh-lined side windows with roll-up covers and tie straps let you dial in exactly the ventilation you need, keeping warmth in and insects out while preventing excess humidity from building up.
• 140 g/m2 reinforced PE sheeting with UV6 coating resists sun degradation and ageing, maintaining healthy light transmission for your plants across multiple growing seasons without yellowing or cracking.
• A 20 cm soil flap runs around the base of the cover so you can bury the edge into the ground, sealing out draughts and improving stability - and the whole structure still dismantles for relocation or off-season storage.

• Colour: Green
• Material: Galvanised steel (25 mm and 19 mm tubing), 140 g/m2 polyethylene (UV6-coated), polyester mesh
• Overall dimensions: 400L x 300W x 200H cm
• Door dimensions: 80W x 190H cm
• Side window dimensions: 35W x 35H cm
• Extended base edge width: 20 cm
• Cover weight: 140 g/m2
• UV rating: UV6
• Windproof level (when fully anchored): Level 6

• 1 x Polytunnel Greenhouse
• 1 x Manual