This page is filled with replacement drain covers for the Oatey style shower drain system. Here you will find 4 inch round shower drain replacements for Oateys’ 42218 & 42238 & 4.19″ square replacement shower drains which are made to fit Oateys’ 42237 & 42238. All of these drains have a hole to hole measurement of 3-3/8″. If you think you have this style of drain system, but aren’t sure feel free to email us a picture of your drain along with your contact number so that we can help you get the right size and perfect replacement for your shower drain.