HTGSupply 100 Foot by 4 Foot Roll Heavy-Duty Reflective Diamond Foil on Black Poly Film, 6.7 Mil

HTG Supply Diamond Foil is the preferred product for lining indoor grow rooms. The highly reflective diamond textured silver finish reflects more valuable light back to plants and eliminates the risk of hot spots, while the black layer provides a completely lightproof barrier. Heavy-duty 6-mil thickness makes HTG Supply diamond foil perfect for creating grow room partitions or building DIY grow enclosures that will stand up to long-term use. No other Mylar/poly liner matches the combined durability and reflective qualities of HTG Supply diamond foil. Roll measures 4 ft. x 100 ft.