Sdc 491-bb Back Box Emergency Door Release Station

Product Description

The SDC 491-bb is a back box designed for use with the SDC-491 emergency door release station. It provides a rigid, surface-mount enclosure that secures the release station to the wall in a clean, professional installation. Constructed from heavy-duty metal, the back box gives the 491 station a stable housing that meets the demands of commercial and institutional access control environments. Locksmiths, security integrators, and low-voltage electricians typically install this hardware as part of a complete egress or access control system.

The 491-bb is used wherever the SDC-491 emergency door release requires surface mounting rather than a flush or recessed wall install. Common applications include commercial office buildings, schools, healthcare facilities, and other occupancies where code-compliant emergency egress hardware must be mounted on finished wall surfaces. The back box provides the structural base that anchors the release station securely and routes wiring cleanly into the assembly.

Key Features

• Heavy-duty metal construction for durability in commercial environments
• Designed specifically for the SDC-491 emergency door release station
• Enables surface mounting on finished wall surfaces
• Provides clean wiring management into the release station
• Supports professional, code-compliant egress hardware installations

Compatibility

Designed as a dedicated back box for the SDC-491 emergency door release station for surface-mount installations.

Installation Notes

Installation is typically performed by a licensed low-voltage electrician or security integrator. De-energize the access control circuit before wiring the release station into the back box. Secure the back box to the wall surface using appropriate fasteners for the substrate, and route all field wiring through the box before mounting the SDC-491 station. Installations should conform to applicable local electrical codes and NFPA 101 life safety egress requirements.

Technical Specifications

• Material: Heavy-duty metal
• Mount Type: Surface mount

Standard Information

• Brand: SDC
• Manufacturer Part Number: 491-bb