Marks USA - Series 21AC - Ornamental Iron Mortise Lockset - Double Cylinder - Backset: 2-1/2" - Entrance - Satin Chrome - Optional Handing Choose Handling:Right Hand Reverse the highest stream quality is

the highest stream quality is achieved while also maintaining excellent stream compression and bandwidth

Humidity ≤ 90% RH(non-condensing)

The smaller size make installation quick and easy on doors or gates

Equipped with a 3/8" diameter x 9" long locking bolt with a 2-3/8" throw standard

Chip: ID47 7938 Hitag

Marks USA - Series 21AC - Ornamental Iron Mortise Lockset - Double Cylinder - Backset: 2-1/2" - Entrance - Satin Chrome - Optional Handing Choose Handling:Right Hand Reverse the highest stream quality isMarks USA has been a primary manufacturer of Ornamental Iron Storm Door locks for many years. During that time, many innovative improvements were developed to increase the reliability and ease of installation. Innovations includes the "Uni Lock" model with single screw assembly, elimination of threaded swivel spindles in favor of the more secure thru bolted design, helper springs in lever rose sets, and steel hubs for greater endurance.