The Union 2242 Sash lock features a black powder coated steel case and is suitable for 12.5mm full rebated timber doors with a thickness of up to 54mm. It has an aluminium deadbolt which can be locked or unlocked from both sides by a key. The aluminum latch bolt is reversible thereby making the lock suitable for both left and right handed doors. Supplied with 2 steel nickel plated keys and is EN1634-1 assessed for use on 60 minutes timber fire doors.