Cal-Royal 7503 Polished Brass Columbus Collection Light Duty Classroom Function Door Knob Set

- Item #: BCI585749

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Polished Brass
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1 In Stock
Ships in 2 to 3 business days, by January 1st


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Configure your Cal-Royal 7503US3 Columbus Collection Light Duty Classroom Function Door Knob Set

  • Free Keying Option more info ►

    Choose "Keyed Alike" to use the same key on multiple locks or "Keyed Different" to ensure that your locks will have different key codes.

    Please contact customer service for quotes on master keying or to key multiple manufacturers alike.

    Two keys provided per key code.

    • Please Select One


Please select a finish

$17.79 - $20.49

Columbus Series Light Duty Classroom Function Door Knob Set

The Columbus 7503 classroom knob set has a deadlocking latch bolt operated by knob from either side except when the outside knob is locked from the outside by a key. When the outside knob is locked, the latch bolt is operated by turning the inside knob for panic-proof egress. The Columbus series has positive spring catch to keep knob from slipping off or being pulled off, heavy gauge cold rolled steel internal mechanism and 2-3/8" to 2-3/4" adjustable backset.


  • Positive Spring Catch Prevents Knob Slipping or Being Pulled Off
  • Concealed Screw Mounting
  • 2-1/8" Cylindrical Housing for Strength and Durability
  • Threaded Outside Rose
  • Heavy Gauge Cold Rolled Steel Internal Mechanism
  • ANSI A156.2
  • Grade 3
  • Adjustable 2-3/8" to 2-3/4" Backset
  • Guard Bolt Deadlocks Latch Bolt Automatically
  • 6 Pin Solid Brass "C" Keyway


  • Knob Diameter: 2"
  • Knob Projection: 2-5/8"
  • Rose Diameter: 2-3/4"
  • Door Thickness: 1-3/8" to 1-3/4"
  • Standard Backset: 2-3/8" to 2-3/4" Adjustable
  • Crossbore: 2-1/8"
  • Edgebore: 1"
  • Faceplate: 2-1/4" x 1-1/8"
  • T Strike

Cal-Royal has focused on providing "Innovative and Value Added" hardware products and accessories to the builders industry since 1983. In accepting this charter, Cal-Royal has continued to be the leader in import hardware. Their product offering is designed to comply with the Americans with Disabilities Act (ADA) and to encompass all levels of ANSI classification, Grades 1, 2 and 3 as well as UL requirements. They offer a complete line of mortise locks, exit devices, door closers, hinges and many other hardware and trim products.

Additional Cal-Royal Links

Our SKU: Cal-Royal 7503

This product is listed under the following manufacturer number(s):

  • Cal-Royal 7503US5
    Antique Brass
  • Cal-Royal 7503US3
    Polished Brass
  • Cal-Royal 7503US32D
    Satin Stainless Steel

*Denotes a finish or option that has been discontinued

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Cal-Royal 7503 Reviews

Rated 3 out of 5 by from good knob easy knob to work with...just wish reversing the key was easier can't seem to do it
Date published: 2013-03-27

Buy the Cal-Royal 7503US3 in Polished Brass at Research Cal-Royal 7503US3 in Polished Brass online. Find Cal-Royal 7503US3 in Polished Brass features and specifications. Get the best deal by comparing the Cal-Royal 7503US3 in Polished Brass today.

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