Description
The Stanley Security A45-501HL 689 is a hold open long arm assembly designed for D-3550 and D-4550 door closers. This aluminum painted component is engineered for facilities managers and maintenance professionals who need reliable replacement parts to extend closer life and maintain smooth door operation without constant manual adjustment.
Compatible with Stanley D-3550 and D-4550 series closers, this arm installs as a direct replacement part. Verify your closer model before ordering to ensure proper fit. As an authorized Stanley Security dealer, E.D. Locks provides expert guidance on closer maintenance and parts compatibility. Contact our team at sales@edlocks.com or 1-877-207-6067 for installation support or to confirm specifications for your application.
