--- product_id: 310638346 title: "Toto TWT173M 1.28 GPF Dual Flush In-Wall Toilet Tank Only with Copper Supply Line" brand: "toto" price: "VT300771" currency: VUV in_stock: true reviews_count: 1 category: "Toto" url: https://www.desertcart.vu/products/310638346-toto-twt173m-1-28-gpf-dual-flush-in-wall-toilet store_origin: VU region: Vanuatu --- # 1.28/0.9 GPF dual flush Copper supply line included In-wall tank system Toto TWT173M 1.28 GPF Dual Flush In-Wall Toilet Tank Only with Copper Supply Line **Brand:** toto **Price:** VT300771 **Availability:** ✅ In Stock ## Summary > 🚽 Flush Smarter, Live Better — The Future of Water Efficiency! ## Quick Answers - **What is this?** Toto TWT173M 1.28 GPF Dual Flush In-Wall Toilet Tank Only with Copper Supply Line by toto - **How much does it cost?** VT300771 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/310638346-toto-twt173m-1-28-gpf-dual-flush-in-wall-toilet) ## Best For - toto enthusiasts ## Why This Product - Trusted toto brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Smart Dual Flush:** Choose between 0.9 or 1.28 gallons per flush to save water without sacrificing performance. - • **Sleek In-Wall Design:** Maximize bathroom space with a discreet, built-in tank system that blends seamlessly with modern interiors. - • **Trusted TOTO Quality:** Backed by a leading brand known for innovation and durability in bathroom fixtures. - • **Durable Copper Supply Line:** Premium copper piping ensures long-lasting reliability and corrosion resistance. - • **Upgrade-Ready Compatibility:** Designed to integrate with advanced washlet systems for a next-level bathroom experience. ## Overview The Toto TWT173M is a high-efficiency in-wall toilet tank featuring a dual flush system with 0.9 and 1.28 gallons per flush options, designed to conserve water while maintaining powerful performance. It includes a durable copper supply line and fits seamlessly into modern bathroom designs, offering a premium upgrade path for smart washlet integration. ## Description IN WALL TANK SYSTEM W/ COPPER PIPE - 1.28GPF & .9GPF FOR CCT Review: Buyer Beware! - I have a toto in-wall carrier and wanted to add atoto washlet. Lots of issues! 1. No where in the instructions, for the washer or the tank does it tell you that you need their PROPRIETARY shut-off valve. After the plumbers messed around with it for several hours and a couple of trips to a specialty plumbing store with no luck, I called toto and was told of the mystery, necessary part. 2. Poor customer service as the rep was very condescending and making excuses for why it isn't in the kit or instructios. 3. The PROPRIETARY chrome shut-off valve in question is $160.00! Yes, because charging 3 times what everyone else charges for these systems isn't enough. There is absolutely no reason, other than to rip you off, does this part need to be proprietary. ## Features - Dual-Max flush promotes water conservation with a 0.9 or 1.28 GPF option ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B084KQYNQY | | Best Sellers Rank | #313,412 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Toilet Water Tanks | | Brand Name | TOTO | | Customer Reviews | 3.7 3.7 out of 5 stars (8) | | Included Components | Product Only | | Installation Method | Wall Mounted | | Item Type Name | Toilets and Bidets | | Item Weight | 43 Pounds | | Manufacturer | TOTO | | Manufacturer Part Number | WT173M | | Material Type | Plastic | | Model Number | WT173M | | Seat Material | Plastic | | UPC | 739268348677 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** TOTO - **Installation Type:** Wall Mounted - **Item Weight:** 43 Pounds - **Material:** Plastic - **Seat Material Type:** Plastic ## Images ![Toto TWT173M 1.28 GPF Dual Flush In-Wall Toilet Tank Only with Copper Supply Line - Image 1](https://m.media-amazon.com/images/I/61zGwO5etzL.jpg) ## Customer Reviews ### ⭐ Buyer Beware! *by J***1 on January 24, 2025* I have a toto in-wall carrier and wanted to add atoto washlet. Lots of issues! 1. No where in the instructions, for the washer or the tank does it tell you that you need their PROPRIETARY shut-off valve. After the plumbers messed around with it for several hours and a couple of trips to a specialty plumbing store with no luck, I called toto and was told of the mystery, necessary part. 2. Poor customer service as the rep was very condescending and making excuses for why it isn't in the kit or instructios. 3. The PROPRIETARY chrome shut-off valve in question is $160.00! Yes, because charging 3 times what everyone else charges for these systems isn't enough. There is absolutely no reason, other than to rip you off, does this part need to be proprietary. ## Frequently Bought Together - Toto TWT173M 1.28 GPF Dual Flush In-Wall Toilet Tank Only with Copper Supply Line - TOTO CT426CFG#01 Toilets, Cotton White - TOTO YT920#WH Toilets and Bidets, White Matte --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/310638346-toto-twt173m-1-28-gpf-dual-flush-in-wall-toilet](https://www.desertcart.vu/products/310638346-toto-twt173m-1-28-gpf-dual-flush-in-wall-toilet) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-08*