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Grand Gardener Polycarbonate Greenhouse 8 x 20 ft. | Rion by Palram-Canopia

Canopia by Palram

Regular price
Price: $6,940.00 CAD
Regular price
List Price: $7,799.00 CAD
Sale price
Price: $6,940.00 CAD
You save: $859.00 (11%)
Shipping calculated at checkout.

Availability: In Stock

Estimated Arrival: Between Jun 21 and Jul 09. CANADA Only.

Shipping Update: Typical estimated delivery time ranges from 3-15 Business Days (pre-orders excluded). Certain remote locations may require a longer time.

Grand Gardener's 8'x20' Greenhouse features a chic barn shape and windowpane design. Its durable, weather-resistant frame is UV-protected while its 4mm twin-wall polycarbonate roof panels transmit light and block UV rays. The roof vent offers great ventilation while the double doors and ample headroom offer ease and beauty. DIY assembly is simple with a pin and lock design. Perfect for the growing enthusiast!

Frosted glazing roof & wall panels.


  • Extra-large, highly resistant, no-tool assembly, safe polycarbonate greenhouse
  • An extra-high ceiling provides an extremely comfortable working environment
  • Built with heavy-duty multi-wall glazing for controlled light exposure and greater insulation
  • Allows maintaining level temperatures and diffuse sunlight
  • Provides up to 100% protection from harmful sun rays (UV)
  • Lifetime resilient polycarbonate plastic walls; do not fracture, turn yellow or opacify over time
  • Easy-to-assemble, sturdy UV-protected resin frame, held together with ‘Pin & Lock’ resin connectors
  • Stylish, classic barn shape design, developed for optimal use of the interior space
  • Built-to-last thanks to outstandingly durable materials
  • Maintenance-free
  • Protects your plants from the elements so that you can enjoy an extended growing period
  • 7-Year Limited Warranty
  • Optional Base Kit
  • Click to see Greenhouse Accessories
  • Click to download Instruction Manual

Twin-Wall Polycarbonate Panels
  • Virtually unbreakable, high-impact resistant, and flexible
  • Twin-wall panels have excellent insulation and protect from strong sunlight exposure
  • Complete UV blockage and 100% UV protected, the panels do not discolour, fracture or shatter
  • Maintain their integrity and withstand extreme weather conditions for many years of use

Barn shaped roof

  • Extra headroom provides a comfortable working environment

Extruded resin frame

  • Provides high insulation and helps creates unique nurturing conditions

Easy Access

  • Door handle and holder

Roof vent

  •  Provides airflow and allows regulation of heat and humidity

Reinforcement cable

  •  Improves structural stability and weather resistance

Rubber sealing strips

  • For better insulation

Extra support beams

  • Reinforced structure for added strength


      A Length 637cm 20'11"ft
      B Width 265cm 8'8"ft
      C Height 238cm 7'10"ft
      D Door Width 118cm 3'10"ft
      E Door Height 192cm 6'4"ft