EUROLITE Diffuser Cover for CLS-18 QCL RGB/WW 18x7W is a separately sold frost filter accessory designed for the CLS-18 QCL RGB/WW 18x7W spotlight. It provides a soft, homogeneous light output by diffusing the fixture’s beam. The cover measures 28.2 cm in length, 11.5 cm in width and 0.2 cm in height, with a weight of 0.09 kg.