ShelterLogic Grow-IT High Arch Greenhouse - 13 ft. x 20 ft. 70658 and it has built-in ventilation

and it has built-in ventilation to keep the air flowing

every frame tube and connector goes through a 13 step surface preparation process

Stands under severe weather conditions – No need to removed panels during winter

100% UV protected 6 mm twin-wall polycarbonate roof panels - protect from harmful UV rays

tubing for quick

ShelterLogic Grow-IT High Arch Greenhouse - 13 ft. x 20 ft. 70658 and it has built-in ventilationHIGH ROOF FOR GROWING TALL PLANTS The GrowIT High Arch Greenhouse allows for taller plants and provides a stronger and more stable structure. Our heavy duty translucent rip stop polyethylene cover will outlast and outperform standard greenhouse fabrics for multiple seasons of use. Frame 1 5 8" 4,1 cm heavy duty steel frame with DuPont Premium powder coat finish resists chipping, peeling, rust and corrosion. High Arch Reinforced Rafter Design Bigger,