SKB2G - 2G IP65 Weatherproof Outdoor Accessory Box Socket For Switch, Spur, RCD

ESR SKB2G 2 Gang Waterproof Accessory Box ideal for use with switches and sockets, spurs, RCD sockets and any other standard size accessory. 20mm Knockout. Polycarbonate construction: tough, impact & corrosion resistant.

eBay