7-1/2" h, 6-1/2" opening, integral thermal protected air-tite recessed 6" halo housing, for insulated ceilings & direct contact with insulation, for use in 2" x 8" joist construction, adjustable socket bracket, junction box listed for through branch circuit wiring, 7 each 1/2" ko's, 4 each non-metallic ko's with pry out slots & strain relief, plaster frame with locking screw for hanger bars, adjusts for ceiling thickness, pre-installed captive nailless bar hangers to 24" joist span, bar hangers can be repositioned 90&degree.without tools, hangers fit t-bar spline, damp location, feed through, ip rated, ul, csa, meets state of Washington restricted air flow requirements.