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The LCN 3133STDGLBLKRH is a size 3, right-hand concealed in-door track door closer finished in 693 black. Designed for heavy-use applications, this closer mounts inside the door to keep the hardware hidden from view while delivering reliable, controlled closing action. The concealed track design protects the closer arm and associated hardware from tampering and vandalism, making it a practical choice for high-traffic environments. Licensed door hardware installers and commercial locksmiths are the primary trades for this type of product. The unit ships as a single assembly and measures 23.2 inches in length, 4.4 inches in width, and 4.1 inches in height, weighing 6.5 pounds.
This closer is suited for commercial and institutional doors in high-traffic facilities including schools, hospitals, government buildings, and correctional facilities. The concealed in-door track configuration is common in applications where aesthetics, security, or vandal resistance are priorities. Right-hand designation applies to the hinge side and swing direction of the door, so verify hand orientation before ordering. The 693 black finish coordinates with black door hardware and frame components in modern or institutional interiors.
Designed as an OEM-style concealed in-door track closer replacement or new installation for commercial and institutional doors requiring a size 3, right-hand closer with a black finish.
Installation should be performed by a licensed door hardware specialist or commercial locksmith familiar with concealed closer systems. Power down any access control or electrified hardware integrated with the door before beginning work. Verify door hand, frame preparation, and track alignment before mounting to avoid misalignment that can cause binding or incomplete closure. Consult applicable building codes and ADA requirements for closing force and speed adjustments after installation.
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