Maximum Box Size for AWD?

Hi, does anyone who does AWD know what the deal is with the maximum box size?

I read that the max box size for AWD is 25x25x36 both on seller cloud and seller labs. However, isn’t this different than the max box size for FBA? Which supposedly is 25x25x25? Wouldn’t this be an issue when AWD ships into FBA? These are for standard size units by the way.

In AWD, this is important because we’re charged a $2 per box fee and we would like to keep costs down as much as possible.

Edit: Now I do see, buried in some amazon awd article, that "Conveyable boxes: Boxes that are smaller than 25 inches on any side and that weigh 50 lb or less."

But where did this 25x25x36 max size come from? Did amazon change this in the recent past?