A29 Cast Iron Horizontal Rim Lock, Black Powder-Coated Finish Elegantly designed Horizontal Rim Lock Set adds a historic touch to your home Black Powder Coat- A baked-on finish that is virtually maintenance free and is permanent. Heavy-Duty Cast Iron, Handmade, Sturdy Construction, Easily Reversible for right or left handed doors. Length: 4 1/8", Width: 3 1/4", Height: 3/4", Backset: 3 1/16" Includes installation hardware such as high quality screws (1 extra), two skeleton keys and keyhole escutcheon. Porcelain knobs are not included, but can be ordered through us on Amazon.com (B00CR78SSA, B00CY8RM0W). Easy to install. For fixing screws on any wooden surface, mark and drill pilot holes with a drill bit appropriate for the mounting hardware. Insert and tighten the screw. Do not over torque the screw as it may break.