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2" PVC FLAPPER W/ CLEAR CONE
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- pvc flapper clear
- Parts and Accessories Type:
- Flapper
- Department:
- Plumbing
- Application:
- Toilet
TOTO THU303 – Frequently Asked Questions
1) What exactly is the TOTO THU303 replacement part?
THU303 is a 2 inch PVC toilet flapper with a clear cone, sold by TOTO as a replacement part for the tank. It is the rubber-style seal that sits on the flush valve and lifts when the toilet is flushed, not a whole valve assembly.
2) Is the THU303 the correct flapper for a TOTO Dual Max toilet?
Yes. THU303 is TOTO's replacement cap for the Dual Max flush valve, supplied as a 2 inch PVC flapper with a clear cone. Order it by the part number THU303 to be sure you get the Dual Max version rather than a generic 2 inch flapper.
3) My TOTO toilet keeps running between flushes. Is replacing the flapper the fix?
A toilet that trickles or refills on its own usually has a flapper that is no longer sealing on the valve seat, and on a Dual Max tank the THU303 flapper is the part that does that sealing. Swapping it is a tool-free job: shut the supply, flush the tank down, unhook the chain and the flapper ears, and set the new one on the same pegs.
4) Does the THU303 come with a chain, gasket, or the rest of the flush valve?
What ships is the flapper itself, a 2 inch PVC flapper with a clear cone. If your flush valve body, seat, or fill valve is cracked or scaled, a flapper will not cure the leak and you need the valve assembly instead.
5) Can I use a universal hardware-store flapper instead of the TOTO THU303?
TOTO Dual Max flush valves use a specific cap geometry, and THU303 is the part TOTO supplies for it. A generic 2 inch flapper may sit on the seat but often changes how much water each flush dumps, which upsets the dual-flush volumes. For a property with several TOTO Dual Max units, standardizing on THU303 keeps flush performance consistent across the building.
6) Is the THU303 flapper rubber or plastic, and will chlorine tablets damage it?
It is PVC with a clear cone rather than soft natural rubber. In-tank chlorine or bleach tablets are hard on any flapper material and are the usual reason one fails early, so if you are buying replacements often, pull the tablets out of the tank.
How fast can I get the TOTO THU303 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 TOTO THU303 come with a warranty?
Absolutely. The TOTO THU303 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 TOTO THU303?
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 TOTO THU303 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.