Turn the SWB14 14" metal housing into a flush mount enclosure! Flush mounting is ideal for hollow stud walls. The minimum rough opening is 361.95mm (14.25”) wide x 361.95mm (14.25”) high x 88.90mm (3.5”) deep. It can be adjusted for varying wall finish thickness and this locking, removable, hinged door extends beyond the box edges approximately 14.73mm (5/8”) which easily conceals uneven cutouts of the wallboard edges. (Requires a 101-500.)