Manufactured from tough impact resistant thermoplastic which provides strength and durability. Enclosures are fitted with 20mm knockouts to accept standard UK conduit fittings. All knockouts include a unique drill start feature for use with 25mm conduit fittings if required. Generous wiring space in the back box. Temperature range -5°C to +40°C (Average value over 24 hour period not to exceed 25°C). · · · Socket outlets accommodate all types of BS 1363 plugs, including standard pre-wired plugs · · IP66 sockets accept virtually every type of 13A plug · · IP66 sockets accept virtually every type of 13A plug