Appleby SB629 (35mm) 1 OR 2 gang, dry lining mounting box. Appleby SB629 (35mm) 2 gang switched socket (up to 4 gang light switch) dry lining mounting boxes. APPLEBY 35MM 1 OR 2 GANG DRY LINING BOX. 3 potential cable entry points - 2 knockout cable entry points on the side and one 25mm base knockout.