Non-metallic sheathed cable clamps. Ceiling box with 14 -1/4 in - 23-1/2 in adjustable bar hanger. Fixture spacing for 2-3/4 in and 3-1/2 in 4 in diameter x 2-1/4 in depth. Ground lug and screw. 6 in tegral clamps. Listed for fixture support up to 50 lb. UL Listed, meets NEMA OS-2.