Used with the aluminum flush-mount channels offered separately, these polymer covers conceal the LEDs and diffuse the light output. They are particularly useful where installed lighting will be visible, such as on the underside of a shelf or in a display cabinet, or to soften lighting to eliminate reflective hotspots on a nearby surface. The diffusers can be cut to length using a fine-tooth handsaw.
They are available with frosted (translucent) or opal (milky) surface finishes. The frosted diffuser allows good light transmission, but the LED lights are somewhat visible. The opal diffuser provides more uniform light diffusion and good LED concealment.