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: 6-3/8 in.Lamp: 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 requiredRemodel units come complete with four remodel clips to accommodate ceiling thickness from 3/8-in. to 5/8-in.Remodel unit has eight 1/2-in. and four Romex knockouts7-1/2 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