This is a Dimmable 12V MR16 Pressed Steel IP65 Fire Rated Downlight. It is fitted with intumescent material which completely seals the downlight and cut-out in the event of a fire. Suitable for 30, 60 & 90 minute fire rated ceilings. This lamp is also designed to have reduced recess depth for shallow ceiling voids. Note: For use with Aluminium Reflector Lamps only.