... with 110mm cut out 1.6063 aluminum die cast heat sink 2.4" cut hole 110mm 3.400lm 4.2years 7w led downlight with 110mm cut out ... :outside placing self-development constant current driver,with,EMC,unload,coverload and short circuit protection ... .---Lens:optical-grade lens,with adjustable beam angles to perform indifferent applications ... support. 7w led downlight with 110mm cut out