Resistant to fire 30, 60 & 90 minutes and approved to BS476 pt21 All Steel body (Black) and suitable for GU10 LED 5W lamps All Steel body (Black) and suitable for GU10 LED 5W lamps Fixed (non-adjustable) aluminium Twist & Lock lamp retention ring Satin Chrome - Die-cast Bezel (with GU10 Lamp Holder) BS476 Part 23 - 1987 Type B, Building regulation E BS476 Part 21 and ISO143-6 Designed to ensure maximum safety and prevent fire from penetrating the ceiling void, floors or loft space above. Fixed (non-adjustable) 70mm cut-out 120x82mm