What is the diameter of the whole needed?
1
Hello Shawn, Thank you for your question about the Delta Faucet model GR250-BL. I apologize for any difficulty finding this information. I know that can be frustrating. We are happy to help! The hole will need to be large enough for the 13/16" mounting shank. See the specifications for more information: http://pdf.lowes.com/productdocuments/e0a4104d-07b7-45d6-be31-2cc02a4322b4/15945050.pdf Please reach out directly if you have any questions or need additional assistance. Thank you for being a loyal Delta Faucet customer. Best regards, Bryan
