The Nora Lighting NTP-614 phenolic stepped baffle can be used with the following lamp types and housings: Incandescent Sloped housing: 150W R40/PAR38; Incandescent Sloped IC housing: 75W R/PAR30, 100W R40/PAR38 (100W IC); Compact Fluorescent Single PL housing: 13W-26W Quad, 13W-42W Triple, 13W-18W Quad/Triple(IC).