Lamps are NOT includedAIRTIGHT - meets IECC Energy Code. (Less than 2 CFM leakage at 1.57 PSI) Performance Tested per ASTM E283-84Ceiling Cut-Out: 6-1/2 in.Plaster Frame: 7-5/8 in.W x 10-3/4 in.LLamp: Max 75W (see Trim selection)UL, cUL listed for use in damp locations (wet location trims available)Integral thermal protector guards against improper lampingJ-box is listed for eight (4in - 4out) No. 12AWG (90 degrees C) through-branch circuit conductors and has five 1/2 in., one 3/4 in. and four Romex knockouts with true pry out slotsRomex knockouts include built in strain relief - no additional clamps requiredPre-installed hanger bars allow housing to be positioned at any point within 24 in. joist span w/locking screw. Score lines provided for easy field shortening to accommodate 12 in. joist spanHanger bars are designed to fit on to T-Bar spine for quick alignment and can be permanently secured without the need for additional clipsHanger bars can easily be field repositioned 90 degrees on the plaster frameHousing adjusts for ceilings up to 1-3/8 in. thick7-1/2 in. height allows for use in 2 in. x 8 in. joist constructionSealed and gasketed construction limits air exchange between the ceiling plenum and heated or air conditioned areas- performance tested to ASTM-E283 (Washington State)Adjustable socket bracket allows the use of different lamp types and sizes as well as proper and consistent lamp positioningSnap-in medium base socket for tool-less installation in trims requiring socket relocationMeets State of California Title 24 requirements2-year warranty