Best 6m X 3m Polytunnel Deals Online in the UK (25 Deals Found)

Last Updated - 01/04/2026 Sort By:

Best Choice
Crocodile Trading

New
5 Sizes Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more Diagonal & Roof Bracing than all oth
Choose from: 3m x 2m, 4m x 2m, 4m x 3m, 6m x 3m or 8m x 3m !

£174.99
Outsunny

New
Outsunny 6 x 3 x 2m Polytunnel Greenhouse with 3 Roll-up Doors and Mesh Windows, Walk-in Garden Tunnel Warm House Tent w
Multiple doors and windows: A spacious design to hold plenty of plants and flowers. Three roll-up doors for easy access,

£137.00
New
Polytunnel 6m x 3m - Quality 6 Section Greenhouse - Galvanised Frame Pollytunnel
This tunnel will create a usable 18sqm or 193sq ft of workspace, the spec as follows. Greenhouse Polytunnel. Garden & pl

£133.99 £279.99
Best Value
Outsunny

New
Outsunny 6 x 3(m) Walk-in Polytunnel Greenhouse with Upgraded Structure, 2 Hinged Doors, 8 Mesh Windows, Tunnel Warm Hou
6 x 3(m) polytunnel design: A large and open design, giving plenty of room for growing plants, flowers, vegetables and m

£147.21 £166.86
New
BIRCHTREE Polytunnel Fully Galvanised Frame Greenhouse Poly Tunnel
Greenhouse Polytunnel. Garden & plants > Greenhouse Polytunnel. Gazebo - Wedding Tent. Features a full ground bar set up

£133.99 £279.99
Crocodile Trading

New
6m x 3m Polytunnel "Strongest In It's Class" a fully Galvanised Structure with more Diagonal & Roof Bracing than all oth
6m x 3m (20' x 10' APPROX). 25mm FRAME | FRONT HINGED METAL DOOR | ADDED 2m WIDE BARROW ACCESS REAR ZIPPERED DOOR | TWEL

£174.99
Crocodile Trading Ltd

New
Frame Only 6m x 3m Polytunnel"Strongest In It's Class" a fully Galvanised Structure with more Diagonal & Roof Bracing th
6m x 3m (20' x 10' APPROX).

£139.99
New
6m x 3m heavy duty polytunnel greenhouse steel frame grow tunnel allotment
Create your very own microclimate providing higher temperatures and humidity for fruit, vegetables and any other plants

£179.00
Outsunny

New
Outsunny Large Polytunnel Walk In Greenhouse, Plant Gardening Tunnel Green House with Metal Hinged Door, Galvanised Stee
Walk-in greenhouse: Plenty of room for growing plants, flowers, vegetables and more.

£144.49
New
6 x 3 x 2 m Polytunnel Greenhouse Pollytunnel Tent w/ Metal Frame White
• Large walk in greenhouse: Heavy-duty garden polytunnel is an ideal way to extend your growing season by protecting pla

£144.99 £362.48
Panana

New
Large Walk-in Polytunnel Greenhouse with Reinforced Steel Frame, Roll Up Door, Mesh Windows, UV-Resistant 140GPE Fabric,
STURDY CONSTRUCTION: Features a reinforced steel pipe frame with firm triangular structure design that prevents deformat

£115.99
Panana

New
Panana Walk-in Greenhouse Galvanised Frame Polly Tunnel Patio Garden Outdoor Polytunnel 2M/3M/4M/6M (6x3x2m)
A large side doors can be completely opened and rolled up with ropes, makes bigger operating space & better ventilation,

£105.99
New
Frame Only 6m x 3m Poly Tunnel Polytunnel Greenhouse Green House Polly Tunnel
The Cover Is NOT Included. Cover Is NOT Included. 6m x 3m x 2m (l x w x h) 20' x 10' x 6'6" (approx). This Tunnel Has Mo

£139.99
Outsunny

New
Outsunny 6 x 3 m Walk-in Polytunnel Greenhouse, Zipped Doors, 8 Mesh Windows, Tunnel Warm House Tent with PE Cover, Whit
Large model tunnel greenhouse: Spacious 18 m² polytunnel greenhouse great for cultivating flowers, vegetables and fruits

£137.99
New
Polytunnel Greenhouse 2x3m - Weatherproof Heavy Duty Walk in Polytunnel Tent 6m²
Easily create the ideal ventilation conditions. Featuring six windows and a robust hinged door, our heavy duty polytunne

£104.99
Outsunny

New
Outsunny Polytunnel Greenhouse with Windows and Door, Walk in Greenhouse for Garden, Backyard (6 x 3 M)
Large walk-in greenhouse: Heavy duty greenhouse is an ideal way to extend your growing season while easily managing your

£93.09 £97.99
New
3 x 2, 4 x 3, 6 x 3M Reinforced Walk-in Polytunnel Garden Greenhouse Steel Frame
NOTE2: In order to prolong the service life, you need to strengthen greenhouse tent yourself before bad weather. 1x Gree

£105.95
New
6 x 3(m) Upgraded Polytunnel Greenhouse with 2 Hinged Doors & 8 Windows, Green
• 6 x 3m polytunnel design: A large and open design, giving plenty of room for growing plants, flowers, vegetables and m

£175.99 £439.98
New
Frame Only 6m x 3m Poly Tunnel Polytunnel Polly Tunnel Greenhouse Green House
Have A Happy Growing Season ! 6m x 3m (20' x 10' approx). A Fully Galvanised Structure. 6m x 3m (20' x 10' approx) :(1x)

£209.99
New
Outsunny 6 x 3M Walk in Polytunnel Greenhouse Large Outdoor Grow House w/ Door
2 extra slant supporting rods to add stability for this polytunnel large and make the greenhouse tunnel more stable. • L

£119.99
New
6m x 3m Poly Tunnel Polytunnel Pollytunnel Greenhouse Green House Polly Tunnel
Have A Happy Growing Season ! 6m x 3m (20' x 10' approx). Our Next Generation Design Of Polytunnels Encompassing "Clear

£324.99
New
Outsunny Polytunnel Greenhouse with 3 Roll-up Doors, 6 x 3 x 2m, Green
Open design allows you to set up inside how you want. Slanted bracing tubes, four ground stakes and four guy ropes also

£147.99
New
BIRCHTREE Replacement Polytunnel Greenhouse - Pollytunnel Poly Tunnel Cover Only
Greenhouse Polytunnel. Garden & plants > Greenhouse Polytunnel. Gazebo - Wedding Tent. Fishing Tent Shelter. Oil Drain T

£94.99 £109.99
New
Polytunnel 6m x 3m Metal Framed Door Galvanised Frame Strong Connecting Joints
The heavy-duty cover features a strip ventilation window and two rain gutter collectors. Polytunnels UK are specialists

£239.99
New
Outsunny Greenhouse Polytunnel Walk-in Flower Plant Steel 6 x 3 M Outdoor
• Walk-in greenhouse: This garden polytunnel greenhouse is a great way to extend growing season by protecting plants fro

£147.99

25 6m X 3m Polytunnel deals are available from: Amazon, eBay stores, starting from £93.09.
The biggest discount we found is 12% on Outsunny 6 x 3(m) Walk-in Polytunnel Greenhouse with Upgraded Structure, 2 Hinged Doors, 8 Mesh Windows, Tunnel Warm House Tent with UV-resistant PE Cover, Green at Amazon.
The lowest price we found is £93.09 while the highest is £324.99.
Prices for the best 6m X 3m Polytunnel deals average at £151.06.
Last updated on April 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for 6m X 3m Polytunnel.