The Prairie collection by Nostalgic Warehouse features simple, curved styling popular in the 1920's and 1930's and is modeled after one of the door hardware choices in Sear's Craftsman Kit homes. The style has been modified slightly to fit on modern pre-drilled doors. This privacy set features an active latch with a locking mechanism. The lock is activated by a privacy pin which is pushed through the rosette or backplate. This set will fit doors between 1 3/8" to 1 3/4" thick.