Knightsbridge Galvanised Pattress Box for Small Multimedia Plate Knightsbridge Galvanised Pattress Box for Small Multimedia Plate Designed for use with Small Multimedia Combination Plates. Galvanized steel construction 1mm thickness ( /- 1%) 2 x 2G 47mm depth boxes on a rear back plate Each 47mm back box has: One fixed mounting lug and one adjustable mounting lug With earth terminal With mix of 20mm and 25mm knockouts Manufactured to EN 60670
