Industrial Duty Enclosure, Number of Holes 4, 30 Millimeters, Aluminum Surface Mount, Height 9.25 In., Width 3.63 In., Depth 3.53 30mm Push-Button EnclosuresSurface mounted. Type KN-1, KN-6, and KN-7 legend plates will not fit on these enclosures.UL Listed, CSA and CE Certified.3/4" NPT conduit entry