What is the difference between “single-cylinder” and “double-cylinder” deadbolts?
• What options do I have when choosing a new doorknob? You will first decide what brand and quality doorknob you would like to purchase. You then need to determine the backset you will require. The backset is the distance from the edge of the door to the center of the doorknob. Standard backsets are 5 3/4 inches for commercial doors and 5 3/8 inches for residential doors, however larger backsets are common as well — particularly in older homes. Finally you will choose the “finish” (color) and style doorknob you prefer. The most common finishes are stainless steel, polished brass, and antique brass. Residential Questions • How do I replace my mailbox lock? If you have recently moved into an apartment complex, condominium, or residential subdivision with locking mailboxes, it is wise to replace the mailbox lock so you can be sure any previous residents do have have keys to your mailbox. In order to sell you the correct mailbox lock, we will need to know what apartment complex or subdivi
