Baldwin 4273 Concave Wall Mounted Flush Bumper Instruction Manual
Model: 4273
Introduction
Thank you for choosing the Baldwin 4273 Concave Wall Mounted Flush Bumper. This product is designed to protect your walls from damage caused by opening doors and to prevent accidental locking mechanisms from engaging when the door knob or lever strikes the bumper. Constructed from solid forged brass, this bumper offers both durability and functional design. Please read this manual carefully before installation and use to ensure proper function and longevity of your product.
Safety Information
- Always ensure the bumper is securely mounted to prevent detachment and potential injury.
- Keep small parts and fasteners out of reach of children to prevent choking hazards.
- Use appropriate tools for installation. Wear safety glasses to protect your eyes.
- Do not overtighten fasteners, as this may damage the bumper or the mounting surface.
Package Contents
Please verify that all components are present before beginning installation:
- 1 x Baldwin 4273 Concave Wall Mounted Flush Bumper
- Wood Fasteners (for wood surfaces)
- Masonry Fasteners (for masonry surfaces)
Setup and Installation
The Baldwin 4273 bumper is designed for wall mounting. It includes fasteners for both wood and masonry applications.
Step-by-Step Installation
- Determine Mounting Location: Position the bumper on the wall so that the door knob or lever makes contact with the rubber insert of the bumper when the door is fully open, preventing it from hitting the wall. Ensure the concave design aligns to prevent accidental locking.
- Mark Drilling Points: Hold the bumper in the desired position and mark the screw hole locations on the wall using a pencil.
- Drill Pilot Holes: Using an appropriate drill bit for your wall material (wood or masonry), drill pilot holes at the marked locations. Ensure the depth is sufficient for the chosen fasteners.
- Insert Fasteners: For masonry, insert the appropriate anchors (if provided) into the pilot holes. For wood, anchors are typically not required.
- Mount Bumper: Align the bumper with the pilot holes and secure it to the wall using the provided wood or masonry fasteners. Tighten screws until the bumper is firmly in place, but do not overtighten.

Figure 1: Baldwin 4273 Concave Wall Mounted Flush Bumper.
This image shows the front view of the Baldwin 4273 bumper, highlighting its concave rubber insert and solid construction.
Operation
The Baldwin 4273 Concave Wall Mounted Flush Bumper operates passively. Once installed, it functions as a protective barrier between your door and the wall. When the door opens and makes contact with the bumper, the concave rubber insert absorbs the impact, preventing damage to the wall and ensuring that the door's locking mechanism does not accidentally engage, which could lock you out of a room.
Maintenance
To ensure the longevity and appearance of your Baldwin bumper, follow these simple maintenance guidelines:
- Cleaning: Wipe the bumper regularly with a soft, damp cloth. For stubborn dirt, a mild soap solution can be used. Avoid abrasive cleaners or harsh chemicals, as these can damage the finish.
- Inspection: Periodically check the bumper for any signs of looseness or damage. Ensure the fasteners are tight and the bumper remains securely attached to the wall.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Bumper feels loose on the wall. | Fasteners are not tight enough or have loosened over time. | Gently tighten the mounting screws. Do not overtighten. If the holes are stripped, consider relocating the bumper slightly or using larger anchors. |
| Wall is still being damaged by the door. | Bumper is not positioned correctly. | Re-evaluate the bumper's placement. Ensure it makes contact with the door knob/lever before the door hits the wall. Adjust as necessary. |
| Door locking mechanism engages when hitting bumper. | Bumper is not aligned with the locking mechanism, or the concave design is not utilized. | Ensure the concave rubber insert is positioned to receive the door knob/lever, preventing direct contact with the locking mechanism. Adjust bumper height if needed. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 4273 |
| Diameter | 1.75 inches (44mm) |
| Projection | 1 inch (25mm) |
| Construction Material | Solid Forged Brass |
| Mounting Type | Wall Mount |
| BHMA Designation | L02251 |
| Item Weight | 8 ounces |
| UPC | 829846071100 |
Warranty and Support
Baldwin products are manufactured to high standards of quality and performance. For specific warranty information or technical support, please refer to the official Baldwin website or contact Baldwin customer service directly. Keep your proof of purchase for any warranty claims.