This will provide the ideal growing conditions for the perfectionist in you, including superior light transmission and great ventilation. Growers Greenhouse Supplies, Inc. reinvented the Curved Glass Greenhouse with this unique design that provides maximum light transmission and advanced technologies. The GGS Curved Glass Greenhouse features an extra strong structure that makes the most of functional design while maintaining the high quality that professional growers have come to expect from GGS. Double ridge vents provide excellent ventilation and because of the design, provide even distribution of the cool air regardless of wind direction.