57" bath tub?

I am remodeling my kids bathroom and the tub is fiberglass and gross. I want to replace it but can not find the right size. It is 28" x 57" and 15" high. I do not want fiberglass again but prefer acrylic. Does anyone know where I can find one? It is surrounded by three walls and needs a right drain.

 

that is a common 60'

you are not takeing into consideration the part of the tub that is in the
wall...add 3 inches

it is a 5 foot tub 60'inches.......

nothing specail , get it anywhere....

 

A tub size is measured between the bare walls (behind any finish - the studs). You sure it is 57"?

 

Mark, do I add 3" for each side or just the 3" total?

 

Three inches total equals 60" which is a standard size tub.