.container a:link { color: blue; } .container a:visited { color: purple; } .container a:hover { color: red; } .container a:active { color: green; } ESR 35mm Round Circular Lining Plasterboard Wall Mounting Back Box The DLBR Round 35mm Drylining Box by ESR is ideal for fast fixing into cavity wall structures, dry lining partitions and plasterboard up to 15mm thick. Large flange around front prevents the box from slipping into the cavity and matches profile of accessory front plate. Manufactured from flame-retardant thermoplastic, keeping electric elements protected in the event of a fire, even after the structural integrity of the wall has deteriorated. Tough yellow/red nylon lugs have large bearing faces for superior strength and are specifically designed to ensure ease of clamping dry lining boxes with partitioning wall. 1 Gang. 35mm Depth. Suitable for plasterboard depths between 6.35mm and 15mm. Features a large flange to prevent slipping into a cavity.