Don-Jo AF-261 Electric Strike to Cylindrical Lock Conversion Plate

The Don-Jo AF-261 is a filler plate designed to convert an electric strike cutout in a door frame back to a standard cylindrical lock strike configuration. When an electric strike is removed or replaced with a conventional cylindrical strike, the larger frame pocket left behind requires a cover plate to close the gap, restore a clean frame face, and provide a proper mounting surface for the new strike. The AF-261 fills that role as a simple, field-installed conversion solution for commercial hollow metal and other frame types.

Key Benefits

• Restores frame integrity — covers the oversize electric strike cutout left in the frame when transitioning back to a standard cylindrical lock strike
• Clean, professional finish — eliminates exposed openings in the frame after electric strike removal
• Field retrofit — straightforward installation for contractors, locksmiths, and facility maintenance personnel
• Cost-effective solution — avoids the need for frame replacement or welding when downgrading or changing access control hardware

Typical Applications

• Commercial offices, schools, healthcare facilities, and institutional buildings converting from electrified to mechanical access control
• Replacement or upgrade projects where an electric strike (mortised frame type) is being removed and a standard cylindrical latch strike is being installed in its place
• Facility managers standardizing hardware across openings during renovation or tenant change-out
• Contractors closing out rough-in frames that were prepped for electric strikes but are being finished with mechanical cylindrical lock hardware

Application Context

Electric strikes installed in frames for cylindrical or mortise lock applications typically require a larger frame pocket than a standard flat strike. When access control requirements change — or when an electrified opening is converted to a mechanical lock — the oversized cutout remains. Rather than replacing the frame or engaging a welder, the AF-261 conversion plate bridges that gap efficiently. The plate mounts over the existing electric strike prep and provides a flush face suitable for a standard cylindrical strike installation.

If your project involves new or replacement electrified hardware rather than a conversion, DoorwaysPlus can quote comparable electric strike and cylindrical lock solutions from preferred commercial hardware lines including Sargent, Corbin Russwin, Hager, and PDQ — brands recognized for stable product platforms and long-term parts availability.

Technical Details

The Don-Jo AF-261 Electric Strike Conversion Plate is a high-performance hardware adapter designed to simplify your door security retrofits. This specialized 4-7/8" conversion plate allows you to transform a large electric strike preparation back into a standard cylindrical lock strike prep without the need for frame replacement or welding. It is the ultimate solution for electric strike conversion, providing a clean, professional-grade mounting surface for a standard ANSI strike.

Constructed from heavy-duty 13-gauge (.095) steel, the AF-261 is engineered to withstand the rigors of high-traffic commercial environments. Whether you are decommissioning an access control system or reconfiguring a doorway for manual hardware, this plate ensures a secure and code-compliant transition.

Key Features & Performance

• Seamless Hardware Conversion: Specifically designed to convert electric strike preps to cylindrical lock strike preps, filling the oversized cavity while providing the correct mounting holes for a standard latch.
  
• Industrial Strength: Manufactured from .095 thick 13-gauge steel, offering superior structural integrity and resistance to prying or forced entry.
  
• Universal Compatibility: Engineered to fit the frame cutouts of industry-leading brands, including selected models from Folger Adam, HES, Trine, Hager, Von Duprin, and Rofu.
  
• Precision Dimensions: Features a standard 4-7/8" x 1-1/4" footprint, ensuring a perfect fit in standard ASA (ANSI) frame preparations.
  
• Professional Restoration: Effectively hides the large internal gaps left by electrified hardware, restoring the frame's aesthetic and preventing debris accumulation.

Technical Details & Specifications

• Brand: Don-Jo
• Model Number: AF-261
• Dimensions: 4-7/8" Height x 1-1/4" Width
  
• Material Thickness: 13 Gauge (.095)
  
• Material: High-Quality Steel
• Finish: Grey Primer (PC), ready for immediate installation or custom painting to match the frame.
• Installation: Installs easily using existing frame tabs. For high-security or damaged frames, these can be reinforced using thru bolts for maximum stability.
• Warranty: Includes a one-year limited manufacturer’s warranty.
  

Why Choose the Don-Jo AF-261?

The Don-Jo AF-261 is an essential tool for locksmiths and facility managers navigating hardware upgrades. Removing an electric strike often leaves a "gaping hole" that standard strike plates cannot cover; this electric strike filler plate bridges that gap with industrial-strength steel. It is a cost-effective and permanent commercial door hardware repair solution that ensures your new cylindrical lockset functions with the precision of a factory-prepped opening.