Silver. The Locinox MAGMAG3000 is a surface mounted electromagnetic gate lock suitable for square posts and gate profiles of 40mm-80mm. Supplied without integrated handles it has a holding force of 300Kg, an anti-residual magnetism kick off system and a raised edge on the magnet housing which prevents crowbar entry between the magnet and the armature plate. . For square posts and 40mm-80mm gate profiles. Fail Open. 500 hour salt spray resistant. Powder coated aluminium housing