Emtek Solid Brass Poseidon Lever With Disk Rosette (Polished Chrome Finish) - The Poseidon lever door knob shown here measures 5 inches in length by 2 1/2 inches wide with a 1 3/8 inch clearance. The disk rosette measures 2 1/2 inches overall. Includes the two levers and door rosettes. Functional sets also include the lever latch, face plate and strike plate. This set is made for modern doors and it fits any door thickness between 1 3/8 inch to 2 1/4 inches thick. Functional sets come with a 2 3/8 inch back set latch - and a 2 3/4 inch back set may be requested at no additional charge. This door lever set comes complete with mounting hardware. Handing is required for leversets. A customer service agent will contact you when the order is placed to discuss handing options.