Jul 20, 2021 - 08:47 AM
If you are able to access the toilet fill valve, we have a 7/8" T-valve that you will use your existing hose and this valve to install your unit.
If you are unable to access the toilet fill valve (skirted toilet) you will need to purchase a 3/8 T-valve from Amazon or GenieBidet. Please contact Bio Bidet Customer Support directly at (877) 339-5214; Monday-Friday 9am-5pm Central Time for further assistance. Thank you, Bio Bidet Customer Support
Source: 3/8" T-valve Connection