1. Introduction
The KOHLER Vault kitchen sink is a versatile double-bowl sink designed for both top-mount (self-rimming) and under-mount installations. Its contemporary design features a low-profile rim for a flush aesthetic, facilitating easy countertop cleanup. The sink's 9-inch deep basins and tight corner radii maximize usable space, while a lowered saddle design helps prevent water overflow between the bowls.

Image 1.1: Top-down view of the KOHLER Vault double-bowl kitchen sink, showcasing its two basins, four faucet holes, and an included sink rack.
2. Product Features
- Dual-Mount Design: Can be installed as a top-mount (self-rimming) or under-mount sink, offering installation flexibility.
- Low-Profile Rim: A 1-1/2-mm rim provides a near-flush appearance, simplifying debris removal from the countertop into the basin.
- Optimized Basin Space: 9-inch deep bowls and tight corner radii enhance the usable capacity of each basin.
- Overflow Prevention: A lowered saddle between the bowls helps contain water within the sink.
- Durable Construction: Made from stainless steel designed to resist rust, stains, chips, and cracks.
- Faucet Holes: Equipped with 4 pre-drilled faucet holes for faucet and accessory installation.

Image 2.1: Detail of the sink's stainless steel construction, highlighting its resistance to rust, stains, chips, and cracks.
3. Specifications
| Attribute | Detail |
|---|---|
| Brand | KOHLER |
| Model Number | 3823-4-NA |
| Material | Stainless Steel |
| Color | Stainless Steel |
| Finish Type | Stainless Steel |
| Product Dimensions (Overall) | 33" (Length) x 22" (Width) x 9.31" (Height/Depth) |
| Bowl Depth | 9 inches |
| Installation Type | Dual-mount (Top-mount/Undermount) |
| Hole Count | 4 (for faucet and accessories) |
| Shape | Rectangular |
| Drain Type | Pop-Up (standard) |
| Minimum Base Cabinet Width | 36 inches |
| Item Weight | 31.5 pounds |
| Included Components | Left-Bowl Sink Rack, Hardware Kit, Self-Rimming clips |

Image 3.1: Dimensional diagram of the sink, illustrating bowl depth, width, and length, along with installation type.
4. Installation
The Vault sink offers flexible installation options to suit various kitchen designs:
- Top-Mount (Self-Rimming) Installation: The sink rim rests on the countertop. This method is suitable for replacement applications and may not require extensive countertop modification.
- Under-Mount Installation: The sink is mounted beneath the countertop for a seamless and integrated appearance.
- Cabinet Requirements: A minimum base cabinet width of 36 inches is required for proper installation of this sink model.
- Included Hardware: The sink comes with a hardware kit for installation and self-rimming clips to secure it to the countertop.

Image 4.1: The sink's dual-mount design allows for both undermount and drop-in installation.

Image 4.2: Example of the sink mounted beneath a countertop for a seamless aesthetic.
5. Operation
The KOHLER Vault kitchen sink is designed for general kitchen use, including washing dishes, food preparation, and other household tasks. The double-bowl configuration allows for separate tasks, such as washing in one bowl and rinsing in the other, enhancing efficiency. The lowered saddle between the bowls is engineered to help manage water levels and prevent overflow.

Image 5.1: The sink installed in a kitchen environment, demonstrating its functional integration.

Image 5.2: The deep basin design provides ample workspace for various kitchen activities.
6. Care and Maintenance
Proper care and maintenance will help preserve the appearance and longevity of your KOHLER Vault sink.
- Daily Cleaning: Wipe the sink with a dry cloth after each use to prevent water spots and maintain its appearance.
- Stubborn Stains: For more persistent marks, use a stainless steel cleaner specifically designed for kitchen sinks. Apply with a soft cloth and follow the cleaner's instructions.
- Avoid Abrasives: Do not use abrasive cleaners, scouring pads, or steel wool, as these can scratch the stainless steel surface.
- Protect from Scratches: While stainless steel is durable, it can scratch. Consider using the included left-bowl sink rack or purchasing additional racks for the bottom of the bowls to protect against scratches from pots, pans, and utensils.

Image 6.1: Recommended cleaning method using a stainless steel cleaner and a soft cloth.
7. Troubleshooting
This section addresses common concerns that may arise during the use of your sink.
- Water Spots: Stainless steel can show water spots, especially in areas with hard water. Regular wiping with a dry cloth after each use is recommended to minimize their appearance.
- Scratches: Stainless steel sinks can scratch from contact with metal objects. To minimize scratching, use sink grids or racks and avoid dragging heavy or sharp objects across the surface.
- Slow Drainage / Food Particle Retention: Due to the relatively flat bottom design, small food particles may not rinse away easily towards the drain. Spraying water directly towards the drain may be necessary to clear debris.
- Installation Issues (Fasteners): Ensure all installation fasteners are securely tightened according to the installation instructions. If issues arise, consult a professional plumber or contact KOHLER customer support.
8. Warranty Information
The KOHLER Vault kitchen sink is covered by a One-year Limited Warranty. This warranty covers defects in material and workmanship under normal use and service. For specific terms, conditions, and details on how to make a warranty claim, please refer to the official warranty documentation included with your product or visit the official KOHLER website for customer support information.





