Does anyone know where I could find a 1 11/16 OD bathtub drain ? No, I'm not mistaken. 1 5/8 is too small, and 1 3/4 is too big. I have the exact tub in another room, took out the drain in there, and sure enough, it is 1 11/16 outside diameter. House isn't THAT old (30 years).

I can't find it anywhere.

Anyone know of a online specialty plumbing place that might have this ?

Thanks in advance.