The Acudor FB-5060 Access Door is approved by Underwriters Laboratories (UL) for 1-1/2 hours "B" label in walls and ULC for 2 hours "B" label in walls. Designed to maintain continuity in a 2-hour fire barrier wall, the FB-5060 Acudor access door should be used whenever it is necessary to provide access in fire rated walls, when temperature rise is not a factor. For drywall applications, this door is available with galvanized steel drywall taping bead flange. (FB-5060-DW)