The No 7242 surface mounted rim lock, sometimes called a box lock, can be used with many Nanz handles. The deadbolt is operated with a bit key from the interior. Either a cylinder or a keyhole escutcheon can be ordered for the exterior. A night bolt is also available. The body measures 5-3/4” x 3-7/8” with a 1” projection. All Nanz plated and patinated finishes are available. The lock is also available in larger sizes as the No 7244, which measures 4-1/4” x 8” with a 1″ projection or the No. 7243 which measures 3-3/4″ x 6″ with a 1” projection.