For use in existing ceilings. Integral flange and exclusive locking bars permit quick mounting in 1/2" to 1-1/2" thick ceilings. UL & CUL listed for damp locations. IC/Non-IC peel away label for trims. Remodel recessed lighting housing. Integral locking clips permit quick installation in ceilings. UL and CUL listed for damp locations and through wiring. US Patent 5758959