Don-Jo FF-45 Hinge Filler Plat...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.00
$2.56
Don-Jo FF-45 Hinge Filler Plate 4-1/2" x 1-5/8" 10-Gauge Steel for Commercial Doors

Don-Jo FF-45 Hinge Filler Plate 4-1/2" x 1-5/8" 10-Gauge Steel for Commercial Doors

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Model: FF-45
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$4.00
$2.56
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Don-Jo FF-45 Hinge Filler Plate 4-1/2" x 1-5/8" 10-Gauge Steel for Commercial Doors

The Don-Jo FF-45 Hinge Filler Plate is a heavy-duty commercial-grade door trim accessory engineered to cover and conceal hinge cutouts on steel doors. Measuring 4-1/2" in length and 1-5/8" in width, this filler plate is constructed from 10-gauge (.134) steel, delivering the structural integrity and durability required for demanding commercial applications. Designed as a professional finishing solution, it provides a clean, polished appearance wherever hinge mortises need to be filled or covered.

Key Features

  • Precise Dimensions: Measures 4-1/2" in length and 1-5/8" in width, purpose-built to cover standard hinge cutouts on commercial doors for a flush, professional finish.
  • Heavy-Gauge Steel Construction: Fabricated from 10-gauge (.134) steel for exceptional strength, rigidity, and long-term durability in high-traffic commercial environments.
  • Commercial-Grade Quality: Rated for commercial applications, making it suitable for use in offices, institutions, and other demanding door hardware installations.
  • Convenient Shelf Pack: Available in a shelf pack of 10 units, ideal for contractors, facilities managers, and distributors requiring multiple plates for large-scale projects.
  • Door Trim & Accessory Category: Classified under Door Trim and Accessories — Filler Plates, Lock Adapters and Wrap Arounds — ensuring compatibility with standard commercial door hardware configurations.

Technical Specifications

  • Subcategory: Filler Plates
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Filler Plates, Lock Adapters and Wrap Arounds
  • Commercial/Residential: Commercial
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Don-Jo FF-45?

Don-Jo Hinge Filler Plates are built to professional commercial standards, utilizing 10-gauge (.134) steel construction that ensures lasting performance in high-use environments. The FF-45 delivers a precise 4-1/2" x 1-5/8" fit for reliable, clean coverage of hinge mortises, making it a trusted choice for door hardware professionals who demand quality and consistency on every installation.

Manufacturer Resources

DON-JO Hinges

Product Specs

Subcategory:
Filler Plates
Product Group:
Door Trim and Accessories
Product Subgroup:
Filler Plates, Lock Adapters and Wrap Arounds
Product Type:
Hinge Filler Plate
Commercial/Residential:
Commercial
Product Model:
FF 45
Product Category:
Door Trim and Accessories
Product Substrate:
Steel
Department:
Door Hardware

Don-Jo FF-45 – Frequently Asked Questions

1) What do you use to cover an old hinge mortise on a steel door?
A hinge filler plate is the part for that job. The Don-Jo FF-45 is a 4-1/2 x 1-5/8 inch steel plate made to sit over a hinge cutout on a commercial steel door and close it off with a flat, finished face. It fills and conceals the mortise; it does not restore the door's hinge function, so use it where the hinge has been relocated or removed, not where a hinge still has to hang.
2) Is a 10-gauge filler plate overkill, or does the thickness matter?
The 10-gauge (.134) steel is what makes the FF-45 hold a flat face in a high-traffic opening. Thin filler plates dish and oil-can once a cart or a door stop hits them; at .134 the plate stays rigid over an open mortise. It also sits proud of the door face by that thickness, so on a door edge where the hinge mortise is next to the frame rabbet, check your clearance before you fasten it down.
3) I manage a building and need to match filler plates to the hinges already on my doors. Which FF-45 finish do I order?
Match the plate to the hinge and trim already in the opening. Chrome plated reads with satin and bright chrome hinges and stainless-look trim; brass plated goes with brass hinges; Duronodic brown matches dark bronze storefront and dark painted openings. If the doors get repainted on a cycle, order prime coated and paint the plates with the door so every opening comes out the same shade.
4) Can I use the Don-Jo FF-45 filler plate on a wood door, or is it steel doors only?
It is built for commercial steel doors, and that is where it works best, since the 10-gauge plate lands flat against a hollow metal face and the mortise is machine-cut to size. On a wood door it will physically cover a 4-1/2 x 1-5/8 inch mortise, but wood mortises are routed to varying depth and the plate bridges rather than fills the void behind it, so back the cavity with a filler block if the plate has to take any load.
5) Is a hinge filler plate the right fix, or do I need a wrap around plate?
Two different repairs. A hinge filler plate like the FF-45 covers a hinge mortise that is no longer in use, on the door edge or the frame. A wrap around plate reinforces a lock bore and wraps the door face and edge where the lock has torn out. If your problem is a chewed-up lock prep or a door that has been kicked at the latch, the filler plate does nothing for it and you want a wrap around instead.
6) How many Don-Jo FF-45 filler plates come in a pack?
The FF-45 ships as a shelf pack of 10 plates. That is the buying unit, so a job needing plates on a handful of openings is covered by one pack, and a full-floor door change gets ordered in multiples of ten. Finish is chosen per pack, so if you have both chrome and painted openings you order a pack of each.
7) Does the Don-Jo FF-45 come with screws?
Order fasteners separately. Plan on the plate being fastened through the existing hinge screw holes or into fresh holes in the door edge, so have machine screws sized to the tapped holes in a hollow metal door, or self-tapping screws if you are drilling new. On a wood door, wood screws in the old hinge screw locations often will not hold; move to fresh holes or plug the old ones first.
How fast can I get the Don-Jo FF-45 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Don-Jo FF-45 come with a warranty?
Absolutely. The Don-Jo FF-45 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Don-Jo FF-45?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Don-Jo FF-45 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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