21 in. Undermount Bathroom Sink with CeFiONtect in Cotton White

Hello Hadi, Yes. The sink features an overflow. The drain assembly must be purchased separately and is normally included with the faucet you chose. i hope this is helpful and thank you for your interest in TOTO!

Hello Hadi, The overall width of the sink with the rim is 23-1/4 inches, so it would likely not be the best choice for a 24 inch counter top. Determining the sink you need will depend on how much space you'd like to have on the sides and how much space you need in the back for the faucet of your choice. In most cases, you want 4-6 inches or more on either side, 2 inches in front, and the back will be variable depending on the faucet. Assuming you'd like at least 4 inches on the side, please look for a sink that has an inner basin width of 16 inches and then determine your needs front and back. I hope this is helpful and thank you for your interest in TOTO!

Hello, Cotton White is TOTO's brightest while Colonial White will be a bit softer. If you'd like a set of swatches to see in person, we will be happy to send you a set. Please contact our Technical Support team. They can be reached at techsupport@toto.com or call 1-888-295-8134 between 8am - 8pm EST Mon-Fri and press 4 when prompted. We also have live chat on the TOTO USA website. I hope this helps and thank you for choosing TOTO!

Hello Hadi, The drain assembly is normally included with the faucet you choose. Please take a look at the spec sheet linked on the page. If you need additional assistance, please reach out to us directly. Our Technical Support team is standing by to take your call. They can be reached at 1-888-295-8134 between 8am - 8pm Mon - Fri EST and press 4 when prompted. We also have live chat on the TOTO USA website. I hope this helps and thank you for choosing TOTO.

Hello Red, The depth of the sink from top to bottom on the outside is 7-7/8 inches. I hope this is the measurement you are looking for. Take a look at the spec sheet here: https://images.homedepot-static.com/catalog/pdfImages/a7/a721f474-53ed-4839-ab63-605ced1c3221.pdf If you need additional assistance, please reach out to us directly. Our Technical Support team is standing by to take your call. They can be reached at techsupport@toto.com or call 1-888-295-8134 between 8am - 8pm Mon - Fri EST and press 4 when prompted. We also have live chat on the TOTO USA website. I hope this helps and thank you for choosing TOTO.

Hello Bill, The measurements provided for this sink are for the inner basin portion. When the outer lip is included, the measurements are 23-1/4 x 16-3/8 inches. You can view the spec sheet here: https://images.homedepot-static.com/catalog/pdfImages/a7/a721f474-53ed-4839-ab63-605ced1c3221.pdf I hope this is helpful and thank you for your interest in TOTO!

Hello NHMaggie, You will have about 4-1/2 inches on each side for a 30 inch cabinet and 7 inches on each side for a 36 inch wide cabinet. You may be able to fit this into a cabinet of 21 inch depth if you are okay with only having a couple of inches in the front in order to accommodate the faucet in the back. This will depend on your cabinet and the faucet you choose. Please compare the specification sheet provided on the page to the available space in your cabinet and to the faucet specification sheet. If you need additional assistance, please reach out to us directly. Our Technical Support team is standing by to take your call. They can be reached at 1-888-295-8134 between 8am - 8pm Mon - Fri EST and press 4 when prompted. We also have live chat on the TOTO USA website. I hope this helps and thank you for choosing TOTO.