Topaz's 4” Fire Rated Recessed Housings are designed to meet strict fire safety codes and are ideal for new construction projects. UL Fire Rated for up to two hours, these LED housings offer a double wall with non-combustible fiber insulation to prevent flames and toxic gasses from passing through. These fire rated housings are designed for use in commercial, residential and multi-family applications. The housing adjusts up to 1-1/2” to accommodate various ceiling thickness and the quick connector allows for snap-in of LED downlights.