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?