What is a escutcheon plate?
An escutcheon plate is used to cover holes on a sink in order to install a different style faucet. They come in 6″ for a bathroom faucet and 10″ for a kitchen faucet. For example, you would use a 6″ plate to cover a 4″ center-to-center (cc) hole and put a one-hole faucet in the center. A 10″ plate would be used if you had an old style 8″ cc kitchen faucet and wanted to replace it with a single hole kitchen faucet or pull-out type and did not want to use the extra holes for an air gap, soap dispenser, instant hot or water purifier.