Size - 14 inch: 14.00 (355.6mm)H x 14.38 (356.3mm) W x 3.60 (91.4mm) D;Multiple Knock-outs on top and bottom, including two 2 knock-outs on top, facilitate cable entry and routing;Cut-out in base of enclosure for mounting single and double gang J-boxes and power modules;Can be surface-mounted or recessed;Positive tabs on housing sidewalls prevent enclosure from falling through the studs during installation