Grow1 Greenhouse Film 3 Year UV Protection 6 Mil, Clear, 40 ft. x 100 ft.Whether replacing existing greenhouse coverings or building a new greenhouse you're sure to find the best greenhouse film at DL Wholesale. Greenhouse glazing is the material that covers the greenhouse frame and the most widely used material is poly film. We also carry greenhouse film repair tape. Polyethylene film is a thick, flexible material that comes in rolls of various lengths and can be used in single or double layers (for better insulation). A