Multi-purpose cabinets for M1 controls, structured wiring, power supplies and accessories. Featuring hole-slot-hole mounting system to accommodate M1 controllers, shelves, brackets, wire modules, and even third party equipment. The SWB28 has ample space for an M1 controller, backup battery and several accessory boards. The minimum rough opening is 362 wide, 717.5 high, 89 mm deep and includes an oversize lid to cover uneven cutouts and plaster edges. Housing can be surface mounted or flush mounted in hollow walls with studs on 400mm centers. Knockouts for 13/19/32mm conduits & 50mm electrical box • heavy duty steel, powdercoated white and lockable lid with camlock.