Dorma Door Lock

The DORMA ED 200 is an all purpose automatic swing door system which is ideal for both internal and external doors.Simply put, a dormer is a vertical window that is set on a slanted roof. Prominent in 16th-century European architecture, many American homes feature them. The dormer, also called a dormer window, has its own roof, which could be arched, flat, pointed, or ornate.Deadbolt door locks are the most secure type of key lock and are usually used on a home's exterior door. Available in single- and double-cylinder styles, deadbolts are rated according to their strength from Grade 1 to Grade 3. A Grade 1 is the highest grade and provides the most security