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Missing the finishing touch? BLANCO kitchen disposal flanges perfectly complements all of our SILGRANIT kitchen sinks. The BLANCO waste flange creates a tight seal to prevent food and debris from clogging up your pipes while giving you the option to allow water to drain through – ideal for food prep. Making prep-work more pleasing and clean-up less complicated, the BLANCO color-coordinated waste flange also adds an element of style to your sink by creating a seamless look. Strong and durable, these disposal flanges are easy to maintain and are the perfect finishing touch to any hardworking kitchen sink.
- Fit standard 3.5" drain openings
- Designed to work perfectly with most Insinkerator garbage disposals
- Color-coordinated to match all BLANCO SILGRANIT sinks
- Protects your plumbing with a tight seal, preventing food and debris from clogging pipes
Manufacturer Resources
Product Specs
- Department:
- Plumbing
- Parts and Accessories Type:
- Disposal Flange
- Application:
- Sink
Blanco 203451 – Frequently Asked Questions
1) Will the Blanco 203451 disposal flange fit a standard 3-1/2 inch sink drain opening?
Yes. The Blanco 203451 waste flange fits standard 3.5 inch drain openings, which is the common opening on kitchen sinks built for a disposal. If your sink has a 3-1/2 inch cutout, this drops in.
2) Does the Blanco 203451 flange work with an InSinkErator garbage disposal?
It is made to work with most InSinkErator garbage disposals. It mounts at the 3.5 inch sink opening and connects to the disposal mounting assembly below.
3) What color is Blanco flange 203451, and will it match my SILGRANIT sink?
Part number 203451 is the Volcano Gray finish. Blanco color-coordinates these flanges to its SILGRANIT sink colors, so ordering the Volcano Gray flange for a Volcano Gray sink gives you a matched drain rather than a chrome ring sitting in a colored sink.
4) Can I still fill the sink with water using this Blanco disposal flange, or does it just cover the opening?
The flange seals tight to keep food and debris from getting into the pipes, and it also gives you the option to let water drain through, so you can run it open for prep work or seal it when you need to hold water.
5) I'm replacing a worn stopper on a Blanco sink - is this a full drain assembly or just the visible flange?
The 203451 is the disposal flange itself, the visible sink-opening piece that seals the drain. It is a finishing and sealing part for a disposal opening, not a complete waste kit with tailpiece and trap. If the disposal mounting hardware under the sink is intact, this is the part you replace.
6) Is the Blanco 203451 flange metal or plastic?
It is a metal disposal flange with a color-coordinated finish, not a plastic ring. That matters in rental and multi-family kitchens where the drain gets abused.
How fast can I get the Blanco 203451 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Blanco 203451 come with a warranty?
Absolutely. The Blanco 203451 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Blanco 203451?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Blanco 203451 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.