This SMWB series surface mount wall boxes are designed for surface mounting of standard wall plates. They can be used to conveniently mount accessories for FSR or any other manufacturer's controls, switch panels, keypads and IPS wall plates. Rugged construction makes these boxes ideal for indoor commercial and industrial applications. Available in 1, 2, 3 and 4 gang models to satisfy most applications. Mounting holes allow for fixed mounting on virtually any wall surface so the accessory plates are easily accessed. The four models are available in textured black or white paint. Standard concentric knockouts facilitate convenient wiring and installation.