7-1/2-Inch H, 6-1/2-Inch Opening, New Construction Recessed 6-Inch Halo Housing, For Use In 2-Inch x 8-Inch Joist Construction, Integral Thermal Protector, Rated For Insulated Ceilings, Adjustable Socket Bracket, Junction Box Listed For Through Circuit Wiring, 7 Each 1/2-Inch KO-Ft.s, 4 Each Romex KO-Ft.s With Pry Out Slots & Strain Relief, Plaster Frame Includes Locking Screw For Hanger Bars, Adjusts To Ceiling Thickness, Pre-Installed Captive Nailless Bar Hangers To 24-Inch Joist Span, Bar Hangers Can Be Repositioned 90&degree. Without Tools, Hangers Fit To T-Bar Spline, Housing UL, CSA Damp Location, IP Rated, UPC-Ft.ed Bulk.