Rion Grand Gardener Twin Wall Greenhouse

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This Rion Greenhouse is available in 4 sizes:  8′ x 8′, 8′ x 12′, 8′ x 16′ and 8′ x 20′

The Rion Grand Gardener Twin Wall Greenhouse features two kinds of virtually unbreakable polycarbonate panels. The side walls feature 6 mm side panels and the 4 mm thick twin-wall polycarbonate roof panels are 100% UV protected and high impact resistant and diffuse over 70 percent of sunlight for a soft, even light. The weatherproof frame of the Rion Grand Gardener Twin Wall Greenhouse also features simplified assembly with the pin and lock system, while the roof panels simply slide into place. This heavy-duty extruded Resin frame improves both insulation and durability.

The Rion Grand Gardener Twin Wall Greenhouse features a barn-style roof design that provides ample headroom and gives you more space to garden while double doors and included roof vents provide excellent ventilation. This greenhouse can be secured to a concrete pad or a heavy timber foundation. And an optional base kit may be added for additional height and extra stability.


  • Door Dimensions: 75 3/4 in. H x 47 1/2 in. W
  • Hinged single door with latch
  • Double doors can be at either end of greenhouse
  • Expansion kit available
  • UV protected green resin frame
  • No special tools needed for assembly
  • Optional auto vent openers available
  • Optional base kit available 5 in. H x 4 in. W base recommended for ground installation
  • Roof Height: 8 ft.
  • 4 mm twin-wall polycarbonate roof panels
  • 6 mm polycarbonate side panels
  • Roof Vents included – 1 on the 8 ft. x 8 ft.; 2 for the 8 ft. x 12 ft.; 3 for the 8 ft. x 16 ft., and 4 on the 8 ft. x 20 ft.
  • Side panels: clear-as-glass single layer polycarbonate
  • Sidewalls: 5 ft.
  • Shade cloths, base kit, auto openers, hangers, anchoring kit, heater, and misting system also available options
  • 7 year warranty
  • Assembly Manual included
  • Free shipping in continental U.S.

Click here to view the Grand Gardener Clear Wall Greenhouse

Click here to view other Rion Greenhouses

Rion Grand Gardener base kit (optional):

The base kit for the Grand Gardener Twin Wall Greenhouse was engineered to provide additional stability or additional head room for Rion greenhouses. Manufactured with heavy duty 100 percent UV-protected resins and engineered with a U-shape honeycomb design for extra durability. When filled with soil this base kit provides a solid foundation that improves stability and durability against strong winds. The base kit can also be used to provide an additional five inches of head room or additional growing space. Like all Rion products, the base kit assembles in a snap.

  • Assembled dimensions: 8 ft. x 8 ft. x 8 ft. | 8 ft. x 12 ft. x 8 ft. | 8 ft. x 16 ft. x 8 ft.. | 8 ft. x 20 ft. x 8 ft.
  • Push-fit assembly
  • Snaps together quickly
  • Elevates greenhouse five inches
  • Heavy duty 100 percent UV-protected resin frame
  • Areas with strong winds may require additional stakes or concrete footers


Guaranteed Lowest Price. We will not be undersold. Call us to match any other price you find.

More Info About Rion Grand Gardener Twin Wall Greenhouse

Additional information


8' x 8', 8' x 12', 8' x 16', 8' x 20'

Shipping and Returns

Your product will usually be delivered to you by courier. Any accessories will usually be delivered by a separate courier. Any delivery charges levied will only be to cover the cost of the delivery. We will deliver your product and give you the instructions of how to make the most of your product.

We will deal with any problems as quickly as possible.

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