Ideal to accommodate all GU10 Halogen, standard-size LED and CFL bulbs, the ENER-J IP44 and Fire Rated Holder with a circular design, creates a modern look in your kitchen, bathroom, laundry and living room. The adjustable clips suit varying ceiling depths, you could adjust the springs to a right position that is appropriate to your ceiling thickness, so the springs will hold the downlights in position. Pack of five. Each piece is tested for 30, 60 and 90 minutes fire-rated ceilings fire resistance periods; comply with Part B Fire Safety Regulation and UK Building Regulation BS476; conform to BS EN ISO 140-3:1995 and 140-6:1998 for acoustics.