Sdc 491S Special Breakout Glass Door Lock

Product Description

The SDC - SECURITY DOOR CONTROLS 491S is a special breakout glass door lock designed for use on all-glass door assemblies where controlled emergency egress is required. This lock secures glass door panels while allowing breakout capability, meaning the door can be released under emergency pressure to meet life-safety code requirements. It is installed by licensed locksmiths, access control technicians, or commercial door hardware specialists working on storefront, office, or institutional glass door systems.

The 491S is suited for commercial and institutional applications where all-glass or frameless glass doors require both security and compliant emergency egress. Typical installations include office building lobbies, retail storefronts, and public-access facilities where a clean, hardware-minimal appearance is needed alongside code-required breakout capability. Installers should confirm that the door and frame assembly are rated and designed to accept a breakout-style lock mechanism before installation.

Key Features

• Breakout capability supports emergency egress compliance for glass door assemblies
• Designed for all-glass or frameless glass door applications
• Compact form factor suits architecturally minimal storefront installations
• Sold as a single unit for straightforward procurement and replacement

Compatibility

Designed as an OEM-style replacement or new-installation lock for commercial all-glass and frameless glass door assemblies requiring breakout egress functionality.

Installation Notes

Installation should be performed by a licensed locksmith or qualified access control technician familiar with commercial glass door hardware. Disengage all power to any associated access control or electric strike components before beginning work. Verify that the glass door panel and surrounding frame meet the structural requirements for a breakout lock assembly prior to mounting. Consult applicable local building codes and life-safety standards to confirm egress compliance before placing the door back in service.