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TMG-GH1220 12' x 20' Tunnel Greenhouse Grow Tent with 6 Mil Clear EVA Plastic Film, Cold Frame, Hand Crank Roll-Up Sides, Peak Ceiling Roof

Original price $1,950.00 - Original price $1,950.00
Original price
$1,950.00 - $1,950.00
Current price $1,950.00
275.0 lb
87 x 26 x 11 inches
More Shipping Info
Product Manual



  • Exact floor footprint: 12.5’ (W) x 20.7’ (L)
  • Peak ceiling height: 7.2'
  • Truss arches: ⌀1.26” – 18 gauge
  • Horizontal purlins: ⌀1.0” – 19 gauge
  • 50’’ bay spacing
  • 4’ x 6’ walk through door
  • Steel tubing constructed end frame for front and rear arches
  • Approx. 4’ hand crank roll-up sides for ventilation & reduced condensation
  • Aluminum lock channels and wiggle wires to secure films
  • NOT INCLUDED: Horizontal 1x6 treated wood sides


  • 6 mil clear EVA plastic film
  • Light transmittance: 92%-96%
  • Light diffusion: 20%
  • Thermal effect: 80%
  • Anti-fogging and anti-dripping
  • Life span: 36 months
  • Replacement covers available to purchase separately

Shipping Information

  • Packed in one wood crate shipping box
  • Shipping dimensions: 87" x 29" x 11"
  • Shipping weight: 275 lb
Shipping from Richmond, BC

Product Description

TMG Industrial carries a wide variety of cold frame tunnel greenhouse grow tents designed for anyone from a backyard hobby gardener to a sizeable commercial produce grower. With over 30 different sizes and styles available and cover materials ranging from polycarbonate panels, ripstop leno tarps and EVA plastic films, TMG Industrial has become one of the leading cold frame greenhouse distributors across Canada and the USA. TMG-GH1220 12 x 20 feet tunnel greenhouse grow tent features a galvanized steel frame with a 6-mil clear EVA plastic film cover. The cover is removable with wiggle wires in aluminum channels for easy assembly and helps diffuse harsh sunlight for optimal plant growth. With 1 x 6 wood sides designed to add along both sides and the cover being able to hand crank roll up to 4 feet at the entire length, this grow tent is perfect for seeding or protecting your plants from the outside elements, creating warmth and insulation for optimal growing conditions, and doubling the growing seasons. This greenhouse is not engineered to handle snow and wind load. If you live somewhere snow and harsh weather are a concern, this is not the right fit for you!

Additional Info

Engineering drawings are not available for this model.

Please check with your local municipality bylaws to ensure compliance. It is the customers' responsibility to provide any necessary drawings to obtain any permits that may be required.


We're here to support you. This product is backed with our 1-year manufacturer warranty. Customer support and spare parts are offered from our headquarters located in Richmond, BC.
Customer Reviews
4.7 Based on 3 Reviews
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Filter Reviews:
Karine D.
Canada Canada
Canada Canada

Quality is Good

Overall, you'd have to color me impressed. The joints were smooth and without any burrs, and the fittings/screws were quality. Loving the rubbery stretchiness of the plastic film. It seems thicker than the regular 6mil UV greenhouse film from the hardware store. We've been blasting it with North Atlantic gales for 3 months and it's still standing. We are about to order a second one after the torture test we just put the first one through. We did find it too short for our application, so added a small knee wall of wood (aka sawed off pallets). We have since order extra tubing to make it 2.5' taller (part number 4) at a very nominal cost. These will be put through the pallet kneewall to add extra support. It howls here! I'll make a youtube video of how we made the economical knee wall and increased the height. We will add a few snow load supports too and I'll put that in the video as well. The end wall wiggle wire channel instructions are not helpful, but its pretty obvious how to attached it. The rest of the instrcutions were very clear.

TMG Industrial TMG-GH1260 12' x 60' Tunnel Greenhouse Grow Tent with 6 Mil Clear EVA Plastic Film, Cold Frame, Hand Crank Roll-Up Sides, Peak Ceiling Roof ReviewTMG Industrial TMG-GH1260 12' x 60' Tunnel Greenhouse Grow Tent with 6 Mil Clear EVA Plastic Film, Cold Frame, Hand Crank Roll-Up Sides, Peak Ceiling Roof Review
jaeman j.
Canada Canada



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