Hi Mary, Thank you for your question. The base is 5 27/32" wide and 2 3/8" from front to back. Thanks, Jon

Hi, Thank you for contacting us. We apologize for any inconvenience with your Delta Faucet Company product. I am also more than happy to have this opportunity to help you. Unfortunately, I would need a little more information in order to further assist you. I would like to confirm a installation date and place of purchase. To place an order for you, we will need to have your full name, physical street address, and telephone number. We use your phone number for tracking information. Please contact us at 1-800-345-3358. We are open Monday through Friday 7:00 AM to 7:00 PM central time, and 8:00 AM to 5:00 PM on Saturday. Thank you for your help with this and I look forward to hearing back from you! Best Regards, Bethany

Hello Verta, Thank you for your inquiry! The escutcheon plate RP72711PN has a top hole size of about 1-3/4". This escutcheon plate can not be used with the Brizo Charlotte Lavatory faucet, due to the raised lip of the top hole. Best regards, Tanya

Hello hbamy, Thank you for your question! I would be more than happy to assist today. The RP72711 will not work with the Delta 4140-DST. Escutcheon plates are not interchangeable. Please contact us back for any further questions. Best Regards, Kayla

Hello Rick, Thank you for your question! I am happy to assist you! The Delta RP72711CZ escutcheon is made to order. Please contact us back with any further questions. Best Regards, Skyler

Thank you for your question, Rhonda! The RP72711CZ escutcheon plate is 5 27/32" from end to end, and 4" from center to center. I have included a link to the technical specifications diagram for model 597LF-CZMPU, which is a model that uses the RP72711CZ escutcheon plate. https://media.deltafaucet.com/SpecSheet/DSP-L-597LF%20Rev%20H.pdf Best Regards, Benjamin