Fire Enclosure provides fire barrier around recessed lights. It also can be used as vapor barrier for other openings. Can be installed before or after recessed fixture installation. Easy installation reduce labor costs significantly. 2" wide nailing flange on all sides. To be used with Mica tape (FIRETAPE sold separately) to seal the power feeding point. ETL approved 1 hour fire rating. Fits in 2x8 construction. Install easily with drywall screws with flat washers, nails or staples. Meets the specifications of: UL 263, ASTM E119.