I am planning on purchasing a certain brand of fireclay sink (need a specific sink because of unusual size). It has a 3.5 inch drain hole.

On their website, the manufacturer claims you must use one of three of their own brand basket strainers. Needless to say, theirs cost $50 to $80 as opposed to $15 to $25 for generic brands.

Do some sinks really need brand-matched drain parts or are all 3.5 inch drains standard?

  • 2
    I'd get one of each, and return the one that doesn't fit. In my experience they are standard size, but it's entirely possible that a manufacturer made theirs proprietary. – Tester101 Mar 2 '15 at 22:23
  • I have never known that a proprietary drain needed. Pretty much all kitchen sink drains are 3 1/2", and have a threaded section to accommodate thicker sink material. I don't know what you sink looks like, but I have mounted a number of ceramic farm sinks that weigh too much and it took no special drain. – Jack Mar 3 '15 at 7:31
  • @Jack Sounds like an answer to me. – bib Mar 3 '15 at 12:09

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