This custom RLM style features a Type III or Type V polycarbonate prismatic refractor. The Lake Forest fixture has integral ballast capability in its housing. The underside of the shade has a highly reflective coating of gloss white on the inside. The LFH18 has a maximum 175w and scales 18" x 15". The smaller LF has a 100w maximum and scales 18" x 13-3/8".