Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Richelieu Hardware BP9041900 Matte Black Functional Cabinet and Drawer Mushroom Knob.
The Richelieu Hardware BP9041900 knob is designed to enhance the aesthetic and functionality of kitchen, bathroom, and furniture cabinetry. It features a contemporary design with a flared base and a matte black finish, crafted from durable Zamak.
Key Features:
- Functional cabinet and drawer knob for kitchens and bathrooms
- Diameter: 1 3/16 in (30 mm)
- Projection: 1 1/8 in (28 mm)
- Finish: Matte Black, made of Zamak
- Sold per unit, mounting hardware is included for an easy installation (8/32 screws)
Installation Guide
Follow these steps for proper installation of your cabinet knob.

Step-by-Step Installation:
- Prepare the Surface: Ensure the cabinet door or drawer surface is clean and free of debris.
- Mark the Drilling Point: For knobs, determine the desired placement. A common placement is centered on the stile of a cabinet door or in the corner of a drawer face. Use a measuring tape and a pencil to mark the exact drilling point. For multiple knobs, consider using a drilling template for consistency. The provided video demonstrates using a template to mark the precise location for drilling.
- Drill the Hole: Using a drill bit appropriate for the screw size (8/32 screws are included), carefully drill a hole through the marked point. Drill from the front of the cabinet to prevent splintering on the visible side.
- Attach the Knob: Insert the included 8/32 screw through the back of the cabinet door or drawer. Align the knob with the screw and turn clockwise until it is securely fastened. Do not overtighten.
Operation
The Richelieu Hardware cabinet knob is designed for simple and functional use. To operate, grasp the knob firmly and pull to open cabinet doors or drawers. Push to close.
Care and Maintenance
To ensure the longevity and appearance of your Richelieu Hardware knob, follow these simple maintenance guidelines:
- Cleaning: Wipe regularly with a soft, damp cloth. Avoid abrasive cleaners, harsh chemicals, or solvents, as these can damage the finish.
- Polishing: Do not use metal polishes or waxes unless specifically designed for matte black finishes.
- Tightening: Periodically check the knob for looseness. If loose, gently tighten the screw from the inside of the cabinet until secure. Do not overtighten.
Troubleshooting
This section addresses common issues you might encounter with your cabinet knob.
| Problem | Possible Cause | Solution |
|---|---|---|
| Knob is loose | Screw has loosened over time | Tighten the screw from the inside of the cabinet. |
| Knob is difficult to turn/pull | Cabinet mechanism issue or obstruction | Check cabinet hinges/slides for proper function. Ensure no obstructions are preventing movement. |
| Finish appears dull or damaged | Use of improper cleaning agents or excessive wear | Clean only with a soft, damp cloth. Avoid harsh chemicals. If damage is significant, consider replacement. |
Product Specifications
| Attribute | Detail |
|---|---|
| Brand | Richelieu |
| Model Number | BP9041900 |
| Material | Metal (Zamak) |
| Color | Black |
| Exterior Finish | Matte Black |
| Diameter | 1 3/16 in (30 mm) |
| Projection | 1 1/8 in (28 mm) |
| Item Weight | 1.51 ounces |
| Product Dimensions | 1.2 x 1.2 x 1.1 inches |
| Included Components | Contemporary Metal Knob - 9041, 8/32 screws |
| Special Feature | Easy to Install |
| UPC | 773199518112 |
Warranty and Support
For specific warranty information or technical support regarding your Richelieu Hardware BP9041900 cabinet knob, please contact Richelieu Hardware directly through their official website or customer service channels.
Visit the Richelieu Store: Richelieu Hardware Store on Amazon.