Halo, 4", non-insulation contact recessed housing, remodel recessed housing, air-tite, insulation to be 3" away from fixture, integral thermal protector, junction box listed for through circuit wiring, 4 each 1/2" knock outs, 4 each non-metallic knock outs, pry out slots & strain relief, 4 remodel clips secure housing & accommodates 1/2" & 5/8" ceiling materials, 5"h x 4-1/4" opening, ul, csa, damp locations, ip rated.