This economical Luxtron GWSDL404 surface mount round downlight is suitable for installation without ceiling where mounting is required on concrete surface or slab. It is an attractive energy efficient solid state lighting solution with near zero maintenance for home and commercial applications. With its 25, 000 hours lifespan, it is an ideal alternative to the traditional 2x18, 2x26 CFL downlights. Best used to light large areas with where no suspended ceiling is available. Normal to high ceilings like lobbies, living halls, work areas in cost sensitive applications. CONSTRUCTION Aluminium housing in glossy white with reflector in full mirror metalizing to help reflect the LED module and gives a better light throw while diffused on LED surface reduce glare while it does not cut the true illuminance capability of the LED. Available with Philips LED module of 18W and 26W with lifecycle lifespan of 50, 000 hours. Color temperature available in 3000K and 4000K.