Richelieu 4040TFB42 Ball Knobs - Maxwell Series offer a perfect blend of style and functionality for any interior space. Designed with a galvanized all-steel interior mechanism, these knobs ensure durability and reliability for years to come. The sleek flat black finish adds a contemporary touch, complementing a variety of door styles. Installation is made easy with the included template, allowing for quick setup on standard 2-1/8" (55 mm) cross bore 161 door preparations. The knob is reversible for left or right handing, making it versatile for different door orientations. It fits doors with a thickness of 1-3/8" to 1-3/4" and accommodates backsets ranging from 2-3/8" to 2-3/4". The 4040TFB42 features a 4-way removable latch plate, enhancing usability and maintenance. Additionally, it is compatible with keyed alike systems, providing added security for privacy functions. Backed by a 5-year limited warranty on finishes and a 25-year mechanical warranty, this product meets ANSI A156.2-2003 standards, ensuring quality and peace of mind. Whether for residential or commercial use, Richelieu's Maxwell Series Ball Knobs are an excellent choice for those seeking reliable hardware with a modern aesthetic.
Ball Knobs - Maxwell Series
Galvanized all-steel interior mechanismBackset: 2 3/8 to 2 3/4 in
Brand: Onward
Color/ Finish: Flat Black
Diameter: 2 9/16 in
Door Thickness: 1 3/8 to 1 3/4 in
Door Type: Wood
Drilling Diameter: 1 in
Fire- Rating: Available upon request. Fall 2025
Function: Privacy
Grade: 3
Handing Position / Opening Side: Reversible for Left or Right
Keyed Alike: Compatible
Keys: Not Keyable
Latch: 4-Way Latch (Removable Latch Plate)
Material: Steel
Product #: 4040TFB42
Projection: 2 1/2 in
Screw: Included
Screw/ Nail: Included
Standards and Certifications: ANSI A156.2-2003
Style: Ball Knobs
Usage: Hinge Door
Weight: 0.44 lb