Plumbing discussions and local services.
Discussion options
Does this sink drain match a basin with an overflow?
A sink’s overflow opening seems like an easy detail to miss when choosing a replacement drain. Drain assemblies are made for basins with an overflow channel and for basins without one, so I wouldn’t assume the styles are interchangeable.
What’s the best way to confirm the basin’s overflow setup and check that a particular drain’s dimensions and stopper mechanism will fit? Are there measurements or details on the drain and sink that are especially useful to compare before buying?
Join the conversation
Share your experience or ask a follow-up question.
2 replies
Look for a small opening on the basin’s inside wall, usually near the top; it connects to the overflow channel. If you can’t see one, check the basin’s specifications rather than guessing. Then choose a drain explicitly marked for a basin with an overflow - or without one - to match.
Beyond the overflow match, compare the drain’s listed fit range with the basin’s drain-hole diameter and thickness where the drain will seat; also check the tailpiece length and whether the stopper is lift-rod or push-button style. If the dimensions or mechanism aren’t clear from the listings, the sink and drain specifications - or the manufacturer’s fit guidance - are safer to rely on than assuming a standard size.
Find a local plumber.
Loading local plumbers…