Access Door - The Acudor FB-5060 is approved by Underwriters Laboratories (UL) for 1 ½ 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 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 (FB-5060-DW) with galvanized steel drywall taping bead flange.