Device installation box, 1-gang box for device installation British Standard, screw spacing 60.3mm (2 3/8 inch.), with protection class IP30, rated insulation voltage: 400V AC, halogen-free, adhesive fastening or nail fastening, membrane for punching, sealing range M16-M32, support beam capableDimensions: 86 x 86 x 60mmIncluded accessories: earthing screw