Rion Greenhouses are extremely durable and strong. They are constructed with a large diameter, heavy-duty resin frame that has been tested for snow loads up to 1100 pounds and wind speeds up to 80 mph. The frame will not get weathered and rot, like a wood frame can, and will not warp or bend, like an aluminum frame is prone to do. Rion Greenhouses have been designed to withstand the elements and provide many years of trouble-free gardening enjoyment.