Registered Community Design 22470-0004 (Fitting). UK Registered Design 2106811 (Lamp). PAT. NO. GB2384550 (Release Mechanism). PAT. NO. GB2384549 (Lamp Reflector). Extended spring fixing posts allow installation in double thickness plasterboard. Supplied with UK registered design square lamp with patented reflectors for optimum light output. 5 Year guarantee (excludes lamp). Note: The guarantee is invalid if used with a non-Aurora fire hood.