Securitron HEB-3BK-MM15 Header Extension Brackets MM15

Product Description

The SECURITRON -U.S. HEB-3BK-MM15 is a set of header extension brackets designed for use with the MM15 electromagnetic lock. These brackets extend the mounting header to accommodate door frames or header configurations that require additional clearance or offset. The hardware is a lock accessory sold as a single unit and is typically installed by locksmiths, security technicians, or access control professionals during new installations or retrofit projects where standard mounting geometry does not align with the door opening.

These header extension brackets are intended for use in commercial and institutional access control installations. They are used when the MM15 electromagnetic lock cannot be mounted directly to the existing header due to frame depth, door swing clearance, or structural constraints. Proper bracket selection ensures the magnet and armature plate achieve full surface contact for rated holding force.

Key Features

• Designed specifically for the MM15 electromagnetic lock mounting system
• Extends header mounting position to accommodate non-standard frame conditions
• Sold as a single set per unit (EA)
• Categorized as a lock accessory for access control hardware applications

Compatibility

Designed for use with the SECURITRON -U.S. MM15 electromagnetic lock. No additional compatible model numbers were specified in the product data.

Installation Notes

Installation should be performed by a qualified locksmith or access control technician familiar with electromagnetic locking hardware. De-energize the locking system and disconnect power before mounting or adjusting bracket hardware. Ensure all fasteners are secured to structural framing members capable of supporting the lock assembly load. Follow applicable local building codes and fire egress requirements when installing electromagnetic locks on exit doors.