Wall Mount Enclosure, DWR, 12 Space, 26"DMiddle Atlantic 12 Space, 26" Deep Wall Mount Enclosure Redesigned Sectional Wall Mount Rack Enhanced Cable Management for Larger Systems Welded construction Tool Free Quick Mount system Easy, one person mounting of the center section to the backpan on the jobsite. Center section hinges for left or right opening 1 2", 3 4", 1", 1 1 2", 2" and 3" knockouts on top bottom for "cable pass through" 12 1 2" x 12 1 2" laser knockout opening in the backpan