1. Overview
The KOHLER Devonshire Single-Function Showerhead (Model 10391-AK-BN) is designed to provide a consistent and satisfying showering experience. This showerhead incorporates Katalyst technology, which optimizes water flow by infusing air, creating larger, fuller water drops for a more intense and comprehensive spray. Its single-function design ensures reliable performance with a 2.5 GPM (gallons per minute) maximum flow rate, ideal for everyday use. The Vibrant Brushed Nickel finish offers durability and resistance to scratches, tarnishing, and corrosion.

2. Setup and Installation
The Devonshire showerhead is designed for wall-mount installation and easily attaches to a standard 1/2" 14 NPT inlet connection. Professional installation is recommended to ensure proper function and prevent damage.
2.1 Required Additional Hardware
Please note that the shower arm, flange, and shower trim kit are not included with this showerhead and must be purchased separately. For a cohesive aesthetic, consider selecting these components from the KOHLER Devonshire collection.
2.2 Installation Steps (General)
- Ensure the water supply to the shower is turned off.
- Remove any existing showerhead and clean the shower arm threads.
- Apply plumber's tape (not included) clockwise around the threads of the shower arm.
- Thread the new KOHLER Devonshire showerhead onto the shower arm. Hand-tighten first, then use a wrench to tighten an additional 1/4 to 1/2 turn. Do not overtighten.
- Turn on the water supply and check for leaks.

3. Operating Instructions
The KOHLER Devonshire showerhead features a single, optimized spray setting designed for full body coverage. The integrated Katalyst air-induction technology maximizes every water drop, creating a powerful and voluptuous spray that enhances the showering experience.
3.1 Activating the Showerhead
- Turn on your shower's water control handle to initiate water flow.
- Adjust the water temperature to your preference using the shower valve.
- The showerhead will deliver a consistent, single spray pattern. No adjustments to the spray pattern are available on this model.


4. Maintenance
To maintain the performance and appearance of your KOHLER Devonshire showerhead, regular cleaning is recommended.
4.1 Cleaning the MasterClean Sprayface
The showerhead features a MasterClean sprayface with an easy-to-clean surface that resists mineral buildup. To clean, simply wipe the sprayface with your finger or a soft cloth to dislodge any mineral deposits. For more stubborn buildup, use a mild soap and water solution or a non-abrasive bathroom cleaner. Avoid using abrasive cleaners, scouring pads, or harsh chemicals, as these can damage the finish.
5. Troubleshooting
If you experience issues with your showerhead, consider the following general troubleshooting steps:
- Low Water Pressure: Check if the main water supply valve is fully open. Ensure there are no kinks in the water lines. Mineral buildup in the showerhead can also restrict flow; refer to the cleaning instructions.
- Leaking: Ensure all connections are properly tightened. If leaks persist, check the rubber washers or O-rings for damage and replace if necessary.
- Inconsistent Spray: Clean the MasterClean sprayface to remove any mineral deposits that may be blocking individual nozzles.
For persistent issues, contact KOHLER customer support or a qualified plumber.
6. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Kohler |
| Model Number | 10391-AK-BN |
| Style | 2.5 GPM |
| Shape | Round |
| Material | Brass |
| Finish Type | Brushed |
| Installation Type | Wall Mounted |
| Flow Rate | 2.5 Gallons Per Minute (9.5 lpm) |
| Color | Vibrant Brushed Nickel |
| Product Dimensions | 16"L x 16.5"W |
| Number of Settings | 1 (Single Spray) |
| Special Feature | Katalyst Technology |
| Item Weight | 8.9 ounces |
| Certifications | ASME A112.18.1/CSA B125.1 |
7. Warranty and Support
This KOHLER showerhead is backed by the KOHLER Faucet Lifetime Limited Warranty. For detailed warranty information, claims, or technical support, please refer to the official KOHLER website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty purposes.
For further assistance, visit the official Kohler website.





