Key Details | Riga Grand 9.8 x 17.6 Greenhouse Dimensions: 9' 8" W x 17' 6" L x 7' 7" H Sidewall: 3' Frame: Heavy Gauge Extruded Aluminum Color: Silver Covering: 8mm Twinwall Polycarbonate Panels on Roof and Sidewalls; 10mm Twinwall Polycarbonate on Endwalls Door(s): 30" W x 6' H - Heavy Duty Dutch Door with Keyed Lock Roof Vents: 4 - 40" x 24" (Automatic) End Vents: 1 - 30" x 41" Side Vents: 0 Base: Included Foundation: Options - Stakes; Treated 4x4's; Concrete Piers or Slab More foundation information Warranty: Riga Greenhouse Warranty; Frame: - 15 years; Covering - 10 years Manual: Included The German engineered Riga Greenhouses have beautiful and practical designs combined with quality, long-lasting parts and pieces. The Riga features a sturdy rustproof, extruded aluminum frame. The unique "channel" design of the aluminum components allows for simple "slide and fit" assembly, thus saving time and money. Easy to understand step by step assembly instructions are included with every structure. With the thickest twin wall polycarbonate offered on a backyard greenhouse, the Riga hobby greenhouse carries the highest R factor of any hobby greenhouse on the market. This makes the Riga less expensive to heat. Most hobby greenhouses manufactured today offer 4mm or 6mm polycarbonate covering. The Riga hobby greenhouse carries the highest R factor of any hobby greenhouse on the market. It is covered with sturdy 8mm twin wall polycarbonate on the roof and side walls and the end walls are covered with heavy duty 10mm twin wall polycarbonate. This kind of covering provides better insulation making your Riga greenhouse easier to keep cool in the summer and warm during the winter months. The "onion" shape helps shed heavy snow loads. The extra wide 30" heavy duty dutch door with keyed lock is wide enough to easily pass a wheel barrow through. The extra wide 40" x 24" automated roof window(s) and oversized 30" x 42" gable end window maximize the benefits of natural ventilation. Riga Greenhouse Shade Kits are fabricated with 50% Aluminet Shade Cloth and heavy-duty reinforcing tape sewn along all four edges and brass grommets installed every 2' around the perimeter for easy installation using rope or bungee cords.
