Richelieu 4040TFB51 Ball Knobs - Maxwell Series offer a perfect blend of style and functionality for any entrance. Crafted from galvanized all-steel, this robust mechanism ensures durability while maintaining a sleek flat black finish that complements various decors. Designed for easy installation, the product comes with a handy template, making it suitable for standard 2-1/8" (55 mm) cross bore 161 door prep, adhering to ANSI standards. These ball knobs fit door thicknesses ranging from 1-3/8" to 1-3/4" and accommodate backsets of 2-3/8" to 2-3/4". The reversible handing position allows for versatile application on both left and right-opening doors. Additionally, the 4-way removable latch plate enhances usability, ensuring straightforward operation regardless of door configuration. Richelieu stands behind this product with a 5-year limited warranty on finishes and a 25-year mechanical warranty, providing peace of mind for professionals and homeowners alike. Compatible with keyed alike systems, these knobs are not just functional but also add a sophisticated touch to any hinge door setup. With an impressive diameter of 2-9/16" and a projection of 2-1/2", the Maxwell Series Ball Knobs are an excellent choice for those seeking quality and elegance in their hardware solutions.
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: Entrance
Grade: 3
Handing Position / Opening Side: Reversible for Left or Right
Keyed Alike: Compatible
Keys: Keyable
Latch: 4-Way Latch (Removable Latch Plate)
Material: Steel
Product #: 4040TFB51
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