Description Cylinder Backset: 31/32 or 1-1/8 only Cylinder Height: Standard length (cylinder center to retracted bolt tip) is 12 with 1-1/4 adjustment. Other lengths available by special order. Case: Measures 1 x 6 x depth. Depth varies by backset (see table on catalog page). Steel with corrosion-resistant plating. Bolt: Hexagonal 3/8 flat to flat, with 11/16 throw. Made of stainless steel. Strike: 1/2 diameter hole in metal threshold or header is suitable. For wood thresholds, 4005 strike is available separately. Faceplate: Measures 1″ x 6-7/8″. Cylinder Cam: Operable by any standard mortise cylinder with MS cam, dimensioned as shown. Cylinders with MS cams can be readily obtained from most cylinder manufacturers. See CYLINDERS for cylinder make, thumbturn and trim ring information. Standard Package: Basic lock mechanism boxed with actuator arm attached, rod/bolt assembly unattached. Stainless steel bolt guide, mounting screws, and installation instructions included. Cylinders available separately. Shipping weight: 1-1/4 lbs. Color Zinc Plated Color Code 603/US2G Package Qty 1 Warranty 1 Year From Date of Purchase. Aluminium Bottle Contents Swinging ProductType Manual Product Overview Two Point Deadlock, Zinc Plated The 1870 Cylinder-Operated Flushbolt is designed for aluminum stile doors. Prevents accidental locking of the inactive leaf of paired doors.