3 Pieces Diffusion Film - Spreads light softly and evenly, Dimming harsh glaring LED lights, relieve eye strain.Adhesive Thickening Diffuser - Made of environmental film material, high temperature resistance, and steady light transmission.This diffusion sheet can be cut down to a preferred size. After tearing off the release paper, you can apply to the light easily.Great for Indoor and outdoor, like overhead light, LED lights on fish tank, spot light, landscape lighting system.Size: 7.8x11.8inches /20x29cm, Thickness: 0.19mm.