C.R. LAURENCE S4449 CRL Brass Slim-Line Keyed Sash Lock. This die cast Keyed Sash Lock and Keeper readily adapts to narrow stiles. The locking key adds additional security. This latch has a flat locking tongue with a 9/32 inch (7.1 millimeter) tongue projection. One sash lock and keeper per pack.. Part Numbers Variations: S4449
Adapts to Narrow Stiles | Locking Key for Added Security