4x4 ROUND CORNER 1/4 RADIUS CORNERS HINGES Cal Royal Hardware
4x4 ROUND CORNER 1/4 RADIUS CORNERS HINGES Cal Royal Hardware
4x4 ROUND CORNER 1/4 RADIUS CORNERS HINGES Cal Royal Hardware

TBHRC33-NRP 4x4 ROUND CORNER 1/4 RADIUS CORNERS HINGES

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-DURO
-US10B-Antique Bronze Oiled
-US26D-Satin Chrome
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TBHRC33-NRP 4" x 4" Round Corner Hinge

Match the hinge preparation on compatible Timely and Reddi Frame openings with the Cal-Royal TBHRC33-NRP 4" x 4" Round Corner Hinge. Its 1/4" radius corners provide a rounded profile for matching mortises, making it a practical option for replacement and renovation projects that require this size and corner configuration.

What Does NRP Mean?

NRP stands for Non-Removable Pin. This feature secures the hinge pin against removal while the door is closed, helping deter someone from removing the door by taking out its hinge pins. It is especially useful on outward-swinging doors where the hinges are exposed on the outside. Follow the manufacturer's instructions for proper installation and servicing of the pin-retaining feature.

Practical Uses

Use the TBHRC33-NRP when specifying replacement hardware for compatible Timely and Reddi Frame openings or updating hinges during a renovation. Matching the existing preparation can help avoid unnecessary changes to the door and frame. Verify the specific frame preparation and the manufacturer's application requirements, including door weight, size, and frequency of use, before ordering.

Installation and Replacement

Replacement can be straightforward when the existing hinge dimensions, leaf thickness, screw pattern, and 1/4" radius corner mortises match this model. The 4" x 4" dimensions alone do not guarantee a direct fit. Check the manufacturer's template and installation instructions, confirm door and frame clearances, and use suitable fasteners. Nonmatching openings may require additional preparation. Align all hinges carefully to allow free door movement.

Problems It Helps Address

  • Corner-profile mismatch: The 1/4" radius corners provide an option for matching compatible rounded hinge mortises rather than square-corner preparation.
  • Worn hinge operation: A correctly matched replacement can help restore more consistent movement when the mounting points, door, and frame are sound.
  • Unnecessary retrofit work: Matching existing preparation can reduce the need to modify compatible openings.
  • Uncoordinated hardware: Three finish selections help coordinate the hinges with the rest of the door hardware.

For an existing doorway, choosing hardware that matches the frame preparation can make the replacement process less disruptive and keep the finished opening looking consistent. Inspect loose fasteners, damaged mounting material, and alignment separately; replacing a hinge alone will not correct those conditions.

Product Details

  • Part number: TBHRC33-NRP
  • Size: 4" x 4"
  • Corner profile: 1/4" radius
  • Listed application: Timely and Reddi Frame; verify the specific opening's preparation
  • Finishes: DURO, US10B-Antique Bronze Oiled, and US26D-Satin Chrome