6", New Construction Recessed Housing, Air Tight, For Use With Insulated Ceilings, Pre-Installed Nails On Bar Hangars Fit Up To 24" Spacing, T-Bar Clips For Drop Ceilings, 7"H Fits 2" x 8" Joist Construction, Porcelain Socket With Adjustable Socket Plate, Integral Thermal Protector, 7 Junction Box Conduit Knockouts Are Uniform 1/2" Size With True Pryout Slots, 4 Pryouts With Integral Strain Relief For Non-Metallic Sheathed Cable, 3 Push In Wire Connectors For Easier Installation, 6-1/2" Opening, 120V, Compatible With Halo 6" Trims, UL/CUL Listed For Damp Location.