Slide-in dividers separate the box for power and communication services. Adjustable mounting brackets offer flexibility to flush mount box in 1/2", 5/8", 1", and 1 1/4" (12.7mm, 15.9mm, 25mm, and 32mm) wall thicknesses. Ordering Data: 9 3/16" L x 5" W x 3 1/4" D (233mm L x 127mm W x 83mm D), 4-Gang, 1/2", 3/4", 1", and 1 1/2" trade size KOs. NOTE: Certified to Canadian Safety Standards, for sale in Canada. When ordering, add "C" suffix to part number to denote the Canadian version, i.e., "WSA42-4C".