The KLUS design cover K frosted diffuser for our KL1 sized channels creates a finished look for your aluminum channel while hiding the LED strip lights and wires below. The grooves of the polycarbonate cover and aluminum channel allow you to easily push and mate the cover into place. The frosted cover K produces approximately 70% light output (may vary slightly per channel) and does show small dots of light through the cover. The frosted cover is best for applications where the aluminum channel will be seen and provides a clean modern look when your lights are not in use. For less hot spots and more of a line of light effect, you may want to consider using our Extra Frosted Liger Cover. This cover is intended for indoor use only and is not UV resistant. For UV protection or use in damp environments use our outdoor rated HS cover options. This product is available in 1M and 2M lengths.