Lamps are NOT includedCeiling Cut-Out: 5-3/4 in.Plaster Frame: 7-1/16 in. W x 10-3/4 in. LLamp: 75W MaxUL, cUL listed for use in damp locationsUL, cUL wet location listed with select trimsJ-Box is listed for eight (4in - 4out) No. 12AWG (90 degree C) through-branch circuit conductors and has five 1/2 in., one 3/4 in., and four Romex knockout with true pry out slots.Romex knockouts include built in strain relief - no additional clamps required.Pre-installed hanger bars allow housing to be positioned at any point within 24 in. joist span. Score lines provided for easy field shortening to accomodate 12 in. joist span.Hanger bars are designed to fit onto T-bar spine for quick alignment and can be permanently secured without the need for additional clips.Hanger bars can easily be field repositioned 90 degrees on the plaster frameHousing adjusts for ceilings up to 1-3/8 in. thick.7-1/4 in. housing height allows use in 2 in. x 8 in. joist construction.Sealed and gasketed construction limits air exchange between the ceiling plenum and heated or air conditioned areas - performance tested to ASTM-E283 (Washington State)Snap-in medium base socket for tool-less installation in trims requiring socket relocation.Meets State of California Title 24 requirements2-year warranty.