ORCA Grow Film 10 meters ORCA Grow Film is made from threads of a high density specialized reflective plastic which are bonded together creating a unique surface topography. The resulting geometry of the microfibers and the submicron pores within the microfiber, create a highly reflective and diffuse surface. The same principal is found in snowflakes, where normally transparent water is transformed into reflective bright white snow through the unique geometry of ice crystal formation. Diffuse reflection is important to hydroponic growers because it eliminates hot spots and creates the even, efficient distribution of light plants desire. 100 times magnification Beware of killer yields!! Orca Grow Film is unique when compared to traditional reflective foils because its surface reflection is. 99% diffuse reflectance Highest full spectrum reflectance Keeps room cooler Allows humid air out Size:1.3m wide/ 10 meters long.