Don-Jo FF-45 Frame 4.5" Hinge Filler Plate

The Don-Jo FF-45 Frame Hinge Filler Plate is a professional-grade solution designed for the maintenance and repair of commercial door frames. This heavy-duty hinge filler is used to fill the mortise (recess) in a hollow metal frame when a hinge has been removed or relocated. By sealing the abandoned hardware prep, the FF-45 restores the frame's smooth profile, ensuring a clean aesthetic and maintaining the structural integrity of the door opening.

Measuring 4-1/2" x 1-5/8", this plate is engineered to meet standard architectural specifications for commercial door frames. It is an essential component for facility managers and locksmiths performing hardware retrofits in schools, hospitals, and office buildings where "cleaning up" an opening is required for safety and code compliance.

Key Features & Performance

• Industrial Strength: Manufactured at .134" thickness, matching the depth of heavy-duty commercial hinges to ensure a perfectly flush finish with the frame surface.
  
• Standard ANSI Sizing: Features a 4-1/2" height, making it a universal fit for standard 4.5-inch hinge preps in hollow metal or aluminum frames.
  
• Professional Grey Prime Finish: Supplied in a high-quality grey primer, providing an ideal surface for on-site painting to match the existing frame color.
  
• Fire Safety Maintenance: Properly filling hardware voids is a critical step in maintaining the integrity of fire-rated door frames, preventing smoke and heat bypass through open mortises.
• Complete Installation Kit: Each filler plate is packaged with two machine screws for a fast and secure attachment to the existing frame hinge reinforcements.
  

Technical Details & Specifications

• Brand: Don-Jo
• Model Number: FF-45
• Height: 4-1/2"
• Width: 1-5/8"
  
• Thickness: .134 (Heavy-Duty)
  
• Material: High-strength Steel
• Finish: Grey Prime (PC)
  
• Fasteners: Includes 2 machine screws. For high-traffic or high-security areas, these can be reinforced with thru bolts for a permanent, vibration-resistant mount.
  

Why Choose the Don-Jo FF-45?

The Don-Jo FF-45 is the premier choice for "blanking out" frame preps during a door handing change or hardware upgrade. Leaving an empty hinge pocket in a commercial frame is not only an eyesore but a potential point for air infiltration and debris accumulation. This frame hinge filler plate offers a cost-effective, professional-grade solution for door frame repair, ensuring your facility remains secure, aesthetic, and fully compliant with building standards.

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