Registered Community Design 390612-0001/2/3. UK Patent GB2426321. Integrated intumescent material completely seals the downlight and cut-out in the event of a fire. Reduced recess depth for shallow ceiling voids. For use with Aluminium Reflector lamps ONLY. Tested in 30, 60 & 90 minute fire rated ceilings. Tested to BS476 Part 21. Tested to BS EN ISO 140-3:1995 & BS EN ISO 140-6:1998 (Acoustics) confirming that they maintain the ability for an internal or separating floor to provide sound insulation. 2 Year guarantee.