Difference between 1.5" and 2" drain in overflow

[sphelps]

Originally Posted by christyf5

Unfortunately we don't have many plumbing stores. We have Home Hardware. Home Depot doesn't sell it (they only sell the type for irrigation, tons of holes in it) and I'm not sure about Rona, they seem more like a "I need to hang a picture, do you have nails and an apartment sized hammer?" type of store, either that or we have a mini-Rona

Well either way you should be using a 2" standpipe to match your 1.5" drain. You could always use 2" ABS which may be easier to find in your area, it also typically comes in 4 foot lengths.