Black & White Poly, 100'x10', 5.5 mil
Get double the efficiency for your grow room with this black and white poly sheeting. Use the white side for walls and floors, taking advantage of the material's 90 percent reflectivity. When you want to block out light and sun, use the light-resistant black side. This three-foot long folded roll unfurls to 10 feet wide and is waterproof and tear-resistant. Use it all in one, long piece of material or cut to size to completely customize your fit.