Reference:
DS-1705ZJ-DM35
"Wall mount bracket for anti-corrosion dome camera. Formed from one piece stainless steel for a reliable build. Anti-corrosion material: 316L stainless steel. Applicable to coastal area, ship, chemical factory, etc. Dimensions: ?180.6 x 150 x 74 mm (1.78"" x 1.48"" x 0.73"")."