CML Passage Door Knob Set in Matte Black. CML passage door knob sets are built with top quality materials and components such as the stainless steel knobs, durable finishes, and an all metal latch assembly. The stylish Matte Black finish is applied using an advanced electroplating process that ensures it will not scratch chip, fade or peel, and because it is applied over solid stainless steel, it will never corrode. Passage door knobs are plain with no lock and provide the basic function of opening and closing a door, but are made to the same standards and use the same high quality components as our locking door knob sets. Passage door knob sets are popular for kitchens, closets, garages, and exterior doors where locking is achieved by deadbolt. Every CML door knob has an ANSI Grade 3 certification, which is a certified test to ensure the lock set functions flawlessly and shows no wear for more than 200,000 cycles. CML Hardware fully backs all of our products and we provide a complete 5-year warranty that includes durability of the finish and all mechanical function. A CML door knob offers everything you could want in door hardware providing durability style, smooth operation,strength and security.