Nvent Hoffman MAS0604021R5 600x400x210 Enclosure. The Nvent Hoffman Electric MAS0604021R5 600mm light grey wall-mounted mild steel IP 66 enclosure has been meticulously designed with the user in mind. This practical and efficient enclosure comes in a wide range of standard sizes, with various accessories readily available in stock. The wall-mounted range offers a solution for almost every application and can be easily customized to meet specific requirements. It is folded and seam welded, featuring four 8.5mm diameter holes for wall fixing, pressed out in 20.4mm diameter x 2mm depressions to allow air circulation around the rear part of the enclosure. The surface-mounted design allows for a 130° opening angle, with concealed removable hinges featuring captive pins. The hinges can be mounted to allow left or right-hand opening. For heights of 300mm and above, there are studs to mount door profiles, and from heights of 600mm and above, the profiles are included as standard. Sealing is guaranteed by an injected one-piece polyurethane gasket.