Don-Jo HF-45 Door 4.5" Hinge Filler Plate | Square Edge

The Don-Jo HF-45 Door Hinge Filler Plate is an industrial-strength hardware component designed to professionally seal abandoned hinge preps on the edge of a door. Specifically engineered for square-edged, non-handed doors, this 4.5-inch hinge filler is used when a hinge has been removed or relocated during a hardware retrofit. By closing the mortise (recess), the HF-45 restores the door's smooth profile, ensuring a clean aesthetic and maintaining the structural integrity of the door leaf.

Measuring 4-1/2" x 1-3/4", this plate is built to the heavy-duty specifications required for commercial hollow metal and wood doors. It is a critical solution for commercial door repair in high-traffic environments like schools, hospitals, and office buildings where "blanking out" unused hardware pockets is necessary for safety and code compliance.

Key Features & Performance

• Heavy-Duty Thickness: At .134" depth, this plate matches the thickness of standard commercial-grade hinges, ensuring a perfectly flush finish with the door edge.
  
• Universal 4.5" Compatibility: Precision-sized for standard 4-1/2 inch hinge preps, making it a versatile "drop-in" fit for most commercial architectural door specifications.
• Non-Handed Design: Engineered for use on square-edged doors, allowing it to be used on either the left or right side of the opening without modification.
  
• Fire-Rated Maintenance: Properly filling hardware voids is essential for maintaining the integrity of fire-rated door assemblies, preventing smoke and heat bypass through open mortises.
• Professional Grey Primer Finish: Supplied in a high-quality grey primer (PC), providing the perfect base for on-site painting to match the existing door color seamlessly.

Technical Details & Specifications

• Brand: Don-Jo
• Model Number: HF-45
• Height: 4-1/2"
• Width: 1-3/4"
• Thickness: .134 (Heavy-Duty)
  
• Material: High-Strength Steel
• Finish: Grey Primer (PC)
• Fasteners: Packaged with two machine screws. For high-vibration or high-security applications, these can be reinforced with thru bolts for a permanent, vibration-resistant mount.
  

Why Choose the Don-Jo HF-45?

The Don-Jo HF-45 is the premier choice for facility managers and locksmiths who need a professional way to "blank out" hinge preps. Leaving an open mortise in a door edge is not only an eyesore but a potential point for air infiltration and debris accumulation. This commercial door hinge filler offers a permanent, industrial-strength solution for door restoration, ensuring your facility remains secure, aesthetic, and fully compliant with building standards.

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