GrowDen (TM) Hydroponics Indoor Grow Tent Greenhouse Box Room - 5 Year Manufacturer Warranty ! (10'x10'x6.5') 10 Vent Holes (2) 4" Diameter (4) 10" Diameter (4) 12" Diameter Dimensions 6.5' x 10' x 10' (H x W x L) / 2 Windows 20" x 12" Heavy Duty 600D Mylar. Inner Lining Material is 100% highly reflective water-proof Mylar Sturdy Metal rods with Connectors. Rectangle windows with mesh for better ventilation 5 Year Manufacturer Warranty !