Locksandsafes.com is a proud carrier of PDQ Cylindrical knob locks. PDQ locks have multiple finishes such as Satin Stainless Steel (630 / US32D), Oil Rubbed Bronze (613 / US10B) and more, to fit all of your commercial hardware needs. The PDQ knob lock is a comparable and affordable option, while still retaining the durability one would expect out of its more expensive counterparts. PDQ Cylindrical knob locks are available in a large selection of keyways such as Sargent, Russwin, Schlage, Kwikset, Corbin Russwin and many more. This means that you can incorporate your new PDQ lock into an existing master key system with keyways like Yale or Arrow too. You also have options with the door backset; You can choose from a 2 3/8" backset, a 2 3/4" backset or even a 5" backset. Have an older door with a much wider stile and the 2 3/4 inch or 2 3/8 inch backset won't cut it? The 5 inch backset latches are primarily used on older residential doors from the 1950's and 1960's, but they are still available from Locksandsafes.com!