Hellobee Boards

I would venture to say standard is 16x32; however, you'll very likely be fine with standard covers. They usually have some wiggle room since some pads are shorter and wider and some are longer and skinnier. Since that changing pad is very contoured compared to some others, perhaps you'll want a tighter fit so then I'd suggest you get the one made for it but you might have to get one of both and see what you like and return what you don't want.