Euro Profile Cylinder Single Cylinder (Key On Outside And Turn Knob On Inside) Polished Brass US3 Compatible with Marks USA 2750 Thinline Series Keyed Different, 2 keys per lock

Marks #2621 Polished Brass US3 Euro Profile Single Cylinder, typically used with the Marks 2750 mortise Thinline lock. Designed for storm doors, and patio doors.