Hoffman ED1PB1, Push Button Encl, 1Pb X 30.5Mm, 4.50X2.88X2.62 In.Drawn Pushbutton Enclosures are designed to hold 30.5-mm or 22.5-mm 4-way pushbuttons and switches. These enclosures have no welded seams or sharp corners.Features:Drawn 16 gauge steel; no welded seams or sharp cornersCover screws outside gasket sealing surfaceFlat or domed flanged coverGrounding nut in body of enclosureBonding provision on coverOil-resistant gasket External wall-mounting bracketsFactory stamped 4-way pushbutton holes