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The DON-JO EF161BP is a 161 cut out filler plate designed to cover unused or legacy cylinder cut outs in doors. Measuring 1.125 inches wide by 2.25 inches long with a 0.25 inch profile, this plate sits flush against the door face to conceal abandoned mortise or cylindrical prep holes. The brass plated finish gives it a clean, professional appearance suited for commercial and residential door hardware applications. Licensed locksmiths, door hardware installers, and general contractors typically install this plate when a lock cylinder has been removed or a door is being repurposed and the existing prep hole requires coverage.
This filler plate is used wherever a standard 161 cut out exists and no longer houses an active lock cylinder. Common applications include commercial office doors, institutional entry doors, and residential entry doors undergoing hardware upgrades or lock-type conversions. The brass plated finish suits environments where matching existing brass or gold-tone hardware is a priority. It is sold individually and also available in case quantities of 10 units for contractors working multiple openings.
Designed as an OEM-style filler plate for doors with a standard 161 cylindrical or mortise cut out requiring coverage after lock hardware removal or replacement.
Installation is typically performed by a licensed locksmith or qualified door hardware installer. Before installation, ensure the door is secured and any remaining lock hardware has been fully removed from the prep hole. The plate is secured mechanically to the door face; follow the fastener pattern appropriate for the door material and thickness. Verify that the finished plate sits flush and does not interfere with door operation or frame clearance.
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