You're adding a ceiling fan to an existing room and you can't access the ceiling from above — no attic, no way to nail off a new-work box, and the old-work ring won't hold the weight of the fan. This ceiling fan remodel box is designed for exactly that situation: retrofit installation where you only have access from below. 1-gang remodel box with adjustable wings and lag screw mounting — clamps to the ceiling material from inside the room with no framing access needed. Rated for ceiling fan use when installed per NEC guidelines (verify fan weight rating and box compatibility with the fan manufacturer). Includes the hardware needed to mount to the existing ceiling structure. What remodel electricians and finish crews across northeast Nebraska and northwest Iowa reach for when they're retrof Stocked at Crofton Lumber and Akron Lumber.