--- product_id: 46397466 title: "Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush" brand: "sinktwice" price: "NT$943" currency: TWD in_stock: false reviews_count: 4 url: https://www.desertcart.tw/products/46397466-sink-twice-modified-to-function-with-bemis-and-water-ridge store_origin: TW region: Taiwan --- # Water-saving innovation Quick 10-min self-install Dual flush sink integration Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush **Brand:** sinktwice **Price:** NT$943 **Availability:** ❌ Out of Stock ## Summary > 🚿 Flush, Wash, Save: The Future of Bathroom Efficiency is Here! ## Quick Answers - **What is this?** Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush by sinktwice - **How much does it cost?** NT$943 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/46397466-sink-twice-modified-to-function-with-bemis-and-water-ridge) ## Best For - sinktwice enthusiasts ## Why This Product - Trusted sinktwice brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable ABS Build:** Crafted from industrial-strength ABS plastic compressed at 400 tons for long-lasting performance. - • **Smart Leak Detection:** Automatically senses leaks to prevent water waste and boost your home's sustainability credentials. - • **Effortless Installation:** Self-install in just 10 minutes—no plumber needed, no hassle, just instant upgrade. - • **Eco-Chic Dual Flush Sink:** Transforms your toilet tank lid into a sleek hand-washing station, maximizing water efficiency with every flush. - • **Kid-Friendly Hygiene Booster:** Encourages hand washing with an engaging, easy-to-use design that kids actually love. ## Overview Sink Twice innovatively replaces your dual flush toilet tank lid with a built-in sink that uses clean water for hand washing before recycling it to flush the toilet. Compatible with Bemis and Water Ridge top button dual flush toilets, it features leak detection, durable ABS construction, and a quick 10-minute self-install. This eco-friendly upgrade saves water, promotes hygiene—especially for kids—and typically pays for itself within months. ## Description Sink Twice makes a dual flush toilet among the most efficient water toilets available anywhere! Sink Twice replaces your dual flush toilet tank lid with a sink so you can wash your hands with the clean water before the soapy water is sent down the drain to clean your toilet. It detects leaks and often makes your toilet even more efficient in addition to saving the water normally used from a separate sink! It is efficient, durable, and simple to install. Sink Twice generally pays for itself in months. Children love washing their hands with Sink Twice! It turns itself on when the toilet is flushed then turns itself back off once the toilet tank is full. This product is made of extremely durable ABS plastic. The product is 15.5" wide and will hang over the edge of the Water Ridge or Bemis dual flush (but you need the room to wash hands because the button is in the middle of the toilet tank). Review: Five Stars - Excellent customer service. The product is just what I expect. Review: Neat idea - Modified the soap area since we use bars. Only downside of this product is that the water from the sink doesn’t drain into the bowl automatically, it sits in the tank. ## Features - toilet sink, hand rinser, water saver, leak detector, sink, faucet, toilet, extremely durable, great for children, great reminder for hand washing, easy to install ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01EXQ6UXC | | Best Sellers Rank | #1,981,589 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #179 in Bathroom Console Sinks | | Brand Name | SinkTwice | | Color | White | | Customer Reviews | 4.1 4.1 out of 5 stars (6) | | Installation Method | Self installed in 10 minutes | | Item Weight | 2.5 Pounds | | Manufacturer | Sink Twice LLC | | Manufacturer Part Number | 3343 Dual Flush | | Material Type | ABS Compressed at 400 tons | | Model Number | WRBDUALSS1 | | Seat Material | abs,plastic | | UPC | 691054985193 | | Unit Count | 16.0 Ounce | ## Product Details - **Brand:** SinkTwice - **Color:** White - **Installation Type:** Self installed in 10 minutes - **Item Weight:** 2.5 Pounds - **Material:** ABS Compressed at 400 tons ## Images ![Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush - Image 1](https://m.media-amazon.com/images/I/41laVjF3OjL.jpg) ![Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush - Image 2](https://m.media-amazon.com/images/I/41QlDji4z9L.jpg) ![Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush - Image 3](https://m.media-amazon.com/images/I/51Oo2zROu1L.jpg) ## Questions & Answers **Q: How do you operate this? Does it have a liytle lever on the back? What if i dont want wny more water? What if i want water on demand?** A: We love ours and it took just minutes to install. No lever... when u flush water will start to flow form faucet. We use ours out in the Mancave all the time. **Q: What are the dimensions for the dual flush button placement? will it fit the next dual flush repair/conversion kit? they say their button is 2 i in di** A: I custom make them... the American Standard is a rectangular button (I know the size and make consistent with that). The other two most popular ones are the Water Ridge (Costco), and the Glacier Bay Dual Flush (Home Depot)., Water requires us to drill a 2.5" hole for your button. The Glacier Bay requires us to do some sanding and to drill a 2" hole. If you have a different model, we'd better coordinate further based on dimensions you send me of your tank and button. I'm happy to work with you. **Q: how does fill cycle diversion work? Does the water not go into the bowl directly? (where the water ends in the first place?) what causes water savings** A: Fill Cycle Diversion is a bit hard to explain, but it has to do with changing the ratio of water that is allowed into the bowl vs. the tank. American toilets put a lot more water in the bowl than they need to put into the bowl. Sink Twice trims back about 40% of the water that would normally go into the bowl and redirects it to help fill the tank (before it goes to the bowl). Because the tank fills up more quickly, the entire fill cycle shortens (because the float triggers off earlier), typically saving .3 gallons to 1 gallon per flush (depending on the toilet). Fill cycle diversion is one of the three ways that Sink Twice saves water. Others are leak detection and water reuse. It does a lot more to save water than meets the eye. Keep in mind that a few toilets (like the American Standard Dual Flush) already have highly engineered fill cycle diversion (they charge an extra $100 for that toilet probably because of how they over-engineered that very important function). **Q: Where do you find the water ridge duel flush toilet to go with this...because costco does not list them on line ?** A: That's a great question... I think they may have moved on to a different model now... The reality is that the dual flush toilets probably weren't ready for show time in the USA... My personal recommendation is to stick with the 1.28 GPF toilets until the technology gets better for the dual flush toilets. We now have three models of lids. I would take a serious look at our new model called "Sink Again." Everyone loves it and it really makes older toilets very efficient. If you do get a dual flush, please make sure to coordinate with me, because the button sizes are different. You can get the Glacier Bay Dual flush at Home Depot, which is a good fit for our basic Sink Twice model (as modified). ## Customer Reviews ### ⭐⭐⭐⭐⭐ Five Stars *by A***R on November 5, 2017* Excellent customer service. The product is just what I expect. ### ⭐⭐⭐ Neat idea *by L***X on June 14, 2018* Modified the soap area since we use bars. Only downside of this product is that the water from the sink doesn’t drain into the bowl automatically, it sits in the tank. ### ⭐⭐⭐ Didn't fit my toilet then again I didn't measure :/ *by S***A on April 28, 2020* It was to big for my toilet :/ ## Frequently Bought Together - Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush - KES Bathroom Vessel Vanity Sink Pop Up Drain Stopper with Overflow for 1.6"-1.9" Sink Hole, All Metal Rustproof Brass and 304 Stainless Steel, Brushed Nickel, S2008A-BN - KES All Metal Bathroom Sink Drain with Strainer Basket Hair Catcher Anti Clog Pop Up Drain Stopper for Vanity Vessel Sink with Overflow, Rustproof 18/8 Stainless Steel Brushed Nickel S2013A-BN --- ## 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.tw/products/46397466-sink-twice-modified-to-function-with-bemis-and-water-ridge](https://www.desertcart.tw/products/46397466-sink-twice-modified-to-function-with-bemis-and-water-ridge) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-04-23*