Description The GU 4463 lockable concealed window restrictor is a heavy-duty, lockable concealed window restrictor specifically engineered for side-hung windows. Unlike surface-mounted cable restrictors, this unit sits discreetly within the window rebate (the gap between the frame and the sash), providing a clean, invisible finish when the window is closed. It’s most commonly used in steel window systems (like Crittall) but is also compatible with timber and aluminium frames that have sufficient depth for the arm. Features Left or right handed options Lockable with a 4mm allen key (not included) Suitable for M5 countersunk fixing screws 150mm arm length Genuine branded hardware made by G-U (Gretsch-Unitas) High quality part for easy fitting & reliability Share on Twitter Share on Facebook Pin this product Share via email
