I have just purchased an Authentic Garden Greenhouse (Oct 7,2004) after researching all types, brands, and types of construction for many years. I purchased a 12X12 unit and their Company personnel delievered and installed the greenhouse. The quality and workmanship is unbelievable; the engineering is outstanding and the company's professionalism and responsiveness are of the highest quality. The greenhouse is framed entirely of high grade stainless steel and all fastening components are stainless so we will never worry about deterioration of any type. The greenhouse panels are GE Lexan material, double sheet, and will withstand our heavy snowloads here in Rye,Colorado at 7100 feet as well as occasional high wind gusts. We are looking forward to growing various vegetables, herbs, perennials, and exotic plants as well as experimenting with aquaculture, solar water heating, drip irrigation and other horticultural experiments. We are extremely pleased with the greenhouse, the installation, and the high quality of the product and the professionalism of the Authentic Garden Greenhouses personnel.