Galvanised Box Conduit Lid, easily fixed with two M4 machine screws. Fits 20mm & 25mm conduit boxes. Features: Type of Accessory: Heavy Gauge Box Lid Size: Fits 20mm & 25mm conduit boxes Material: Hot dip galvanised steel Standards: BS 4568 & BS31 where applicable If you just need some help, would like to take advantage of our Price Promise or perhaps have a large order to place. Give our team of professionals a call on 0203 994 5470, drop us an email at [email protected] or use our Contact Form.