1. Product Overview
The BLANCO DIAMOND DUAL DECK 1-3/4 BOWL kitchen sink is designed for both functionality and aesthetic appeal, reflecting BLANCO's commitment to quality and craftsmanship. Crafted from SILGRANIT, a patented surface made from the hardest elements of natural granite, this sink offers exceptional durability and ease of maintenance. Its versatile design allows for both undermount and drop-in installation, making it a flexible choice for various kitchen designs.
Figure 1: Top-down view of the BLANCO Diamond Silgranit 60/40 Double Bowl Kitchen Sink in Anthracite.
This sink features a smooth, non-porous surface that is highly resistant to chips, scratches, and heat up to 536°F. It is also resistant to common household acids and alkali solutions, ensuring long-lasting beauty and performance. The dual bowl configuration provides ample space for various kitchen tasks, from washing large pots to rinsing vegetables.
2. Key Features
- SILGRANIT Material: Made of quartz sand, the hardest element of natural granite, ensuring long-lasting durability.
- Easy-to-Clean Surface: Non-porous and smooth stone surface allows for effortless removal of scuff marks from utensils and stains from food and drinks.
- High Heat Resistance: Withstands temperatures up to 536°F.
- Dual Mount Design: Offers versatile installation options for both drop-in and undermount configurations.
- Pre-drilled Faucet Hole: Comes pre-drilled for a single-hole faucet, with the possibility of 4 additional knock-out holes for accessories.
- Generous Bowl Capacity: Large and deep bowls accommodate substantial kitchen items.
3. Specifications
| Attribute | Detail |
|---|---|
| Brand | BLANCO |
| Model Number | 440215 |
| Color | Anthracite |
| Material | Granite Composite, Silgranit |
| Overall Dimensions | 33" L x 22" W x 9.5" H |
| Left Bowl Dimensions | 16-1/2" x 18-5/8" x 9-1/2" |
| Right Bowl Dimensions | 12-1/2" x 16-13/16" x 8" |
| Installation Type | Drop-In; Undermount |
| Hole Count | 1 (with 4 additional knock-out holes) |
| Item Weight | 43 Pounds |
| Included Components | Mounting Hardware, Template |
Figure 2: Detailed dimensions of the BLANCO Diamond Silgranit Sink.
4. Installation
The BLANCO Diamond Silgranit sink is designed for flexible installation, supporting both drop-in (top-mount) and undermount configurations. The sink comes with necessary mounting hardware and a template to assist with accurate cutout and placement.
4.1 Pre-Installation Checks
- Verify that your cabinet base width is appropriate for the sink dimensions (minimum 33 inches).
- Ensure all included components (mounting hardware, template) are present.
- Review local plumbing codes and regulations.
4.2 Installation Steps
For detailed, step-by-step installation instructions, including specific cutout dimensions and sealing procedures, please refer to the official Installation Manual provided by BLANCO. This manual contains critical information for a successful and secure installation.
You can access the official Installation Manual (PDF) here.
Figure 3: BLANCO Diamond Silgranit Sink in a kitchen setting.
5. Operating Instructions
The BLANCO Diamond Silgranit sink is designed for everyday kitchen use, offering a highly functional and durable workspace. Its dual bowls allow for efficient multi-tasking, such as washing dishes in one bowl while preparing food in the other.
5.1 General Use
- Utilize the deep bowls for soaking large pots and pans, minimizing splashes.
- The non-porous surface naturally repels dirt and liquids, making daily cleanup simple.
- The pre-drilled faucet hole and potential knock-out holes allow for customization with various faucet and accessory options (e.g., soap dispensers, hot water dispensers).
5.2 Understanding Silgranit Technology
To better understand the advanced material properties and manufacturing excellence behind your BLANCO Silgranit sink, watch the official production video:
Video: Official video showcasing the production process of BLANCO Silgranit sinks in Canada, highlighting the material's durability, scratch resistance, and temperature resistance.
6. Maintenance and Care
Maintaining your BLANCO Silgranit sink is straightforward due to its durable and non-porous nature. Regular cleaning will keep your sink looking new for years.
6.1 Daily Cleaning
- For everyday cleaning, simply hand wash the sink with warm water and a mild dish soap.
- Wipe down the sink after each use to prevent water spots, especially in hard water areas.
- The surface is resistant to most common food stains; simply wipe them away.
6.2 Stain and Scuff Removal
- For stubborn stains or scuff marks from utensils, use a non-abrasive cleaner specifically designed for composite sinks or a mild abrasive cleaner like Bar Keepers Friend (as suggested by some users). Always test in an inconspicuous area first.
- Avoid using harsh chemicals, strong acids, or abrasive pads that could damage the surface finish.
6.3 Heat and Impact Resistance
- While highly heat resistant, it is always recommended to use a trivet or hot pad under extremely hot pots and pans to protect the sink surface and countertop.
- The Silgranit material is highly chip and scratch resistant, but extreme impact from heavy, sharp objects should still be avoided.
7. Troubleshooting
Most issues with your BLANCO Silgranit sink can be resolved with proper care and cleaning. Here are some common concerns and tips:
7.1 Water Spots/Mineral Deposits
- If you live in an area with hard water, mineral deposits can accumulate. Regularly wipe the sink dry after use.
- For existing deposits, use a solution of white vinegar and water (1:1 ratio). Apply, let sit for a few minutes, then scrub gently and rinse thoroughly.
7.2 Fading or Discoloration
- Silgranit sinks are designed to resist fading. Ensure you are using only recommended cleaning agents and avoiding harsh chemicals that could potentially affect the color over time.
- Deep cleaning with a specialized composite sink cleaner can often restore the original luster.
7.3 Odors
- Odors typically originate from the drain or garbage disposal, not the sink material itself.
- Clean your garbage disposal regularly with ice and citrus peels, or use a specialized disposal cleaner.
8. Warranty Information
Your BLANCO 440215 Diamond Silgranit Kitchen Sink is backed by a Limited Lifetime Manufacturer Warranty. This warranty covers defects in material and workmanship under normal use and service. Please retain your proof of purchase for any warranty claims.
For full details regarding warranty coverage, terms, conditions, and how to file a claim, please refer to the official warranty documentation included with your product or visit the BLANCO official website.
9. Customer Support
Should you require further assistance with your BLANCO Diamond Silgranit sink, including installation queries, product information, or warranty support, please contact BLANCO Customer Support.
- Visit the official BLANCO Store on Amazon for product resources.
- Refer to the "Customer Support" information provided at the point of purchase or on the product packaging.







