Columbus Series Light Duty Single Dummy Door Knob
The Columbus 7540 single dummy knob is perfect for a pull on one side of the door or a matching non functioning pull on a double door set.
- 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
- Knob Diameter: 2"
- Knob Projection: 2-5/8"
- Rose Diameter: 2-3/4"
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
Cal-Royal 754032D Product Specifications
|Approved for Commercial Use||Yes|
|BHMA Certification||Grade 3|
|Handing||Left, Reversible, Right|
|Manufacturer Warranty||Lifetime Limited|
|Material||Brass, Bronze, Steel|
Installation Resource Center
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