1. Introduction
This manual provides instructions for the installation, operation, and maintenance of your Grandeur Hardware 850992 Fifth Avenue Tall Plate with Lyon Knob Privacy Door Knob. This privacy door knob features a crisply tailored Fifth Avenue Plate and a Lyon Knob with sleek octagonal edges, offering a clean, vintage aesthetic. It is constructed from solid, forged brass for durability.
Key Features:
- Made of solid, forged brass for strength and long-lasting durability.
- Pre-attached knobs for quick and easy installation.
- Privacy function: Ideal for bathrooms, bedrooms, or rooms where a locking mechanism is needed.
- Complete set for one door (both sides).
- Hand assembled in the USA.

Image: Grandeur Hardware Fifth Avenue Tall Plate with Lyon Knob Privacy Door Knob, Polished Brass finish. This image displays the complete door knob assembly, including the tall plate and the octagonal Lyon knob.
2. Included Components
Verify that all components are present before beginning installation:
- Door knob and chosen plate for both sides of door
- Latch mechanism
- Privacy spindle
- Privacy pin
- Strike plate
- Mounting screws
3. Setup and Installation
This privacy door knob is designed for easy installation. Follow these general steps for proper setup. Refer to the detailed diagram included with your product packaging for precise measurements and specific instructions.
- Prepare the Door: Ensure your door has the correct bore holes for the knob and latch. The backset size for this model is 2.375 inches.
- Install the Latch Mechanism: Insert the latch mechanism into the edge of the door and secure it with screws. Ensure the bevel of the latch bolt faces the door frame.
- Install the Exterior Knob Assembly: Place the exterior knob assembly (with the tall plate) through the bore hole, ensuring the spindle aligns with the latch mechanism.
- Install the Interior Knob Assembly: Position the interior knob assembly over the spindle and secure it to the exterior assembly using the provided mounting screws. The pre-attached knobs facilitate a quicker installation process.
- Install the Strike Plate: Attach the strike plate to the door frame, aligning it with the latch bolt.
- Test Operation: Close the door and test the latch and privacy locking mechanism to ensure smooth operation.
4. Operating Instructions
The Grandeur Hardware Privacy Door Knob is designed for simple and secure operation.
- To Lock: From the interior side of the door, locate the small privacy pin or turn button on the knob's base or face. Push or turn this mechanism to engage the lock. The door is now locked from the inside.
- To Unlock: From the interior side, simply turn the door knob. This action will automatically disengage the privacy lock.
- Emergency Unlock (Exterior): In case of emergency, the privacy lock can be disengaged from the exterior side using a small tool (such as a paperclip or a specialized key, if provided) inserted into the small hole on the exterior knob's base.
5. Care and Maintenance
Proper care will help maintain the beauty and functionality of your polished brass door knob.
- Cleaning: Clean regularly with a soft, damp cloth. Avoid abrasive cleaners, harsh chemicals, or polishes that may damage the finish. For polished brass, a mild soap solution can be used, followed by thorough drying.
- Avoid Scratches: Do not use sharp objects or abrasive materials on the surface.
- Lubrication: Periodically, a small amount of silicone-based lubricant can be applied to the latch bolt and internal mechanisms to ensure smooth operation. Avoid oil-based lubricants as they can attract dust.
6. Troubleshooting
If you encounter issues with your door knob, refer to the following common solutions:
- Knob is loose: Check and tighten the mounting screws that secure the knob assemblies to the door. Ensure the spindle is properly seated.
- Latch bolt does not retract or extend smoothly: Ensure the latch mechanism is properly aligned and secured. Lubricate the latch bolt as described in the maintenance section. Check for any obstructions in the door frame or strike plate.
- Privacy lock not engaging/disengaging: Verify that the privacy spindle and pin are correctly installed and aligned. Ensure no debris is obstructing the locking mechanism.
- Door does not close properly: Check the alignment of the strike plate on the door frame. Adjust if necessary to ensure the latch bolt fully engages.
If problems persist after attempting these solutions, please contact Grandeur Hardware customer support.
7. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Grandeur |
| Model Number | 850992 |
| Color | Polished Brass |
| Exterior Finish | Brass |
| Specific Uses For Product | Inside |
| Special Feature | Easy to Install |
| Lock Type | Privacy (Non-Keyed) |
| Item Weight | 4 Pounds |
| Metal Type | Brass |
| Handle Material | Brass |
| Product Dimensions | 2.71 x 2.63 x 11 inches |
| Size | Backset Size: 2.375" |
| Installation Method | Easy Installation |
| UPC | 662972509921 |
8. Warranty and Support
Warranty Information:
This Grandeur Hardware product comes with a Lifetime Mechanical Warranty. This warranty covers defects in material and workmanship for the mechanical components of the door knob under normal use.
Customer Support:
For technical assistance, warranty claims, or further inquiries, please contact Grandeur Hardware customer support through their official website or the retailer where the product was purchased. Please have your model number (850992) and purchase information ready when contacting support.







