IP55 Versatile boxes with metric knockouts in the side walls and base for cable entry Side wall knockouts fitted with rubber seals Impact resistant Styles 1, 2, and 3; with press fit lids, accept cables 3.5 to 20.5 mm diameter Style 4; has a lid fastened by 4 screws with 90° twist action and accepts cables 3.5 to 25.5 mm dia