I wanted to add an additional deadbolt on my front door for extra security, and they came through real fast, the technician came right on time and immediately got to work, he made all the necessary adjustments, drilled new holes in the door and in the frame and installed the new lock, all in just 30 minutes, I got the lock from Lowe’s and they charged only for labor, price was set upfront and was totally fair, highly recommend St. Louis Door & Lock.