Trying to cap a water line that connects to my sewage out line. I purchased a cleanout adapter with cap in 2" and 3" and one is too big and one is too small. I think I need a 2-1/2" connector.
NOWHERE in my local brick-and-mortar stores can I find this size, which leads me to believe...
- I am measuring incorrectly, or
- The builder used some off-the-wall size and that is why I am having such a pain time to find the correct cap
To use the convertor coupler, is this the right size I'd need? (tried to block out the local box store as I wasn't certain if that was permitted to post)