GrowDen (TM) Hydroponics Indoor Grow Tent Greenhouse Box Room 80-Inch x 48-Inch x 48-Inch - 5 Year Manufacturer Warranty 8 Vent Holes (2) 4" Diameter (6) 8" Diameter Dimensions 6.6' x 4' x 4' (H xW x L) / 2 Windows 12" x 8" 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 !