1. Introduction
This instruction manual provides essential information for the safe and efficient installation, operation, and maintenance of your STERLING 11402-4-NA Southhaven Top-Mount Double Bowl Kitchen Sink. Please read this manual thoroughly before beginning installation or use, and retain it for future reference.
Important Safety Information: Always wear appropriate personal protective equipment (PPE) such as safety glasses and gloves during installation. Ensure all local plumbing codes are followed. If you are unsure about any step, consult a qualified professional.
2. Product Overview
The STERLING 11402-4-NA Southhaven kitchen sink is a top-mount, double equal bowl design constructed from durable stainless steel. It features sound absorption technology for quieter operation and a self-rimming style with a curved deck design for a clean appearance.
Key Features:
- Double basin with 50/50 split for versatile use.
- Stainless steel construction for durability and ease of cleaning.
- Top-mount (drop-in) installation.
- Center drain location for optimal drainage.
- Four-hole faucet punching for various faucet configurations.
- 8-inch basin depth.
Product Images:

Figure 2.1: Top view of the STERLING 11402-4-NA Southhaven Top-Mount Double Bowl Kitchen Sink, showcasing its two equal basins and four faucet holes.

Figure 2.2: The Southhaven sink installed in a kitchen setting, demonstrating its appearance when integrated into a countertop with a faucet and sprayer.

Figure 2.3: Underside view of the Southhaven sink, showing the basin structure and sound absorption pads.
3. Setup and Installation
The STERLING 11402-4-NA Southhaven sink is designed for top-mount (drop-in) installation. Professional installation is recommended to ensure proper fit and function.
Pre-Installation Checklist:
- Verify all components are present and undamaged.
- Ensure countertop cutout dimensions match the sink template (not included, typically provided with sink packaging or available from manufacturer).
- Gather necessary tools: safety glasses, gloves, sealant, screwdriver, wrench, measuring tape, jigsaw (for countertop cutout if not pre-cut).
- Confirm availability of a 3-5/8 inch drain opening for standard drain assemblies.
Installation Steps (General Guidance):
- Prepare Countertop: If not already done, create the appropriate cutout in your countertop according to the sink's template. Ensure edges are smooth and clean.
- Apply Sealant: Apply a bead of plumber's putty or silicone sealant around the perimeter of the sink's rim that will contact the countertop.
- Position Sink: Carefully lower the sink into the countertop cutout, ensuring it is centered and level. Press down firmly to create a seal.
- Secure Sink: Attach the mounting clips (if included) to the underside of the sink rim and tighten them against the countertop to secure the sink in place.
- Install Faucet and Drains: Install your chosen faucet into the four pre-drilled holes on the sink deck. Install drain assemblies into the 3-5/8 inch drain openings in each basin, following the manufacturer's instructions for the drain components.
- Connect Plumbing: Connect the faucet water supply lines and the drain P-traps to the household plumbing. Ensure all connections are tight and leak-free.
- Test for Leaks: Turn on the water supply and check all connections for leaks. Run water into both basins to verify proper drainage.
4. Operation
The STERLING 11402-4-NA Southhaven sink is designed for standard kitchen use. Its double equal bowls provide flexibility for various tasks, such as washing dishes in one basin while rinsing in the other, or using one for food preparation and the other for cleaning.
The center drain location in each basin facilitates efficient water drainage. Ensure drain stoppers are properly seated when filling the basins and removed for draining.
5. Maintenance
Proper care will help maintain the appearance and longevity of your stainless steel sink.
Cleaning Instructions:
- Daily Cleaning: After each use, rinse the sink thoroughly with water and wipe it dry with a soft, clean cloth. This prevents water spots and mineral buildup.
- General Cleaning: Use a mild liquid dish soap and a soft sponge or cloth for routine cleaning. Always rub in the direction of the stainless steel grain.
- Avoid Abrasives: Do not use abrasive cleaners, steel wool, or scouring pads, as these can scratch the stainless steel surface.
- Chemicals: Avoid harsh chemicals, bleach, or cleaners containing chlorides, as these can damage the finish.
- Stubborn Stains: For more stubborn stains, a non-abrasive stainless steel cleaner can be used, following the product's instructions. Always rinse thoroughly and dry.
6. Troubleshooting
This section addresses common issues you might encounter with your kitchen sink.
Common Issues and Solutions:
- Water Spots/Mineral Buildup: Regularly dry the sink after use. For existing spots, use a solution of vinegar and water, then rinse and dry.
- Slow Drainage: Check the drain for food particles or debris. If the issue persists, the P-trap or plumbing may require cleaning or professional attention.
- Minor Scratches: Stainless steel can scratch. Minor scratches can sometimes be blended with a fine-grit abrasive pad (like Scotch-Brite) by rubbing gently in the direction of the grain. Always test in an inconspicuous area first.
- Leaking Around Rim or Drains: This often indicates an improper seal during installation. For rim leaks, the sink may need to be re-sealed. For drain leaks, check the tightness of the drain assembly nuts and ensure plumber's putty or sealant is properly applied.
- Bent or Damaged Sink: If the sink arrived with significant damage or a bent component, contact the retailer or manufacturer immediately for assistance.
If you encounter issues not covered here or require further assistance, please contact customer support.
7. Specifications
| Specification | Detail |
|---|---|
| Brand | Sterling |
| Model Number | 11402-4-NA |
| Material | Stainless Steel |
| Color | Stainless Steels |
| Product Dimensions (Overall) | 33 inches (Width) x 22 inches (Depth) x 10 inches (Height) |
| Basin Depth | 8 inches |
| Installation Type | Top-Mount (Self-rimming style with curved deck design) |
| Hole Count | 4 |
| Drain Opening | 3-5/8 inches |
| Item Weight | 13.3 Pounds |
| Manufacturer | KOHLER |
| UPC | 087206774942 |
8. Warranty and Support
The STERLING 11402-4-NA Southhaven Kitchen Sink is covered under Sterling's residential limited lifetime warranty or a commercial 3-year limited warranty. For specific terms and conditions, please refer to the warranty documentation provided with your purchase or visit the official Sterling/KOHLER website.
For technical assistance, replacement parts, or warranty claims, please contact Sterling/KOHLER customer support. Contact information can typically be found on the manufacturer's website or in the product packaging.





