STI STI-MBP0913 14 Gauge Backplate
Overview
The STI-MBP0913 is a 14 gauge steel backplate engineered as a replacement mounting component for the STI-EM111504 electric strike. Operating at 9VDC, this backplate delivers the structural rigidity and precise alignment needed when installing strikes into standard door frames. It solves the alignment problem during retrofit or replacement scenarios — a bent or missing backplate forces reinstallation work that could have been avoided with the correct hardware on hand.
Compatibility
This backplate is designed exclusively for the STI-EM111504 strike system. If you are standardizing STI strike hardware across multiple doors or replacing damaged mounting plates in an existing installation, confirm the strike model is EM111504 before ordering — cross-model backplates will not mount correctly.
Installation Notes
The backplate secures to the door frame using the four fixing holes specified in STI installation documentation. Use a 7mm masonry drill bit for frame-mounted installations, and verify that the strike mounting surface is clean and square to avoid binding. The 9VDC supply voltage must be stable and properly protected via the access control panel to prevent strike duty-cycle burnout. Ensure cable gaskets are seated correctly to maintain environmental sealing in areas subject to moisture or temperature swings.
