I am looking at installing a tub and the sizes are not clear what they are.

For example, the "Amiga" bath gives dimensions 72.0″ L x 36.0″ W x 21.0″ H. Is the 6 feet the size of the rough in, or is it somthing else?

In other words if the studs of the wall are 6 feet apart will the bath fit in there?


All tubs come with "rough in" size specifications which indicate necessary framing/opening dimensions for your unit specs. They can often be found online.

Interestingly, yours says:

Dimensions provided on rough-in diagrams are nominal. Measure your actual unit upon receipt and build according to the actual dimensions.

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  • This is correct. The answer is "it depends". I'd consider building to 72-1/2" and fur down later (on the short wall) for a perfect fit. – isherwood Feb 8 '19 at 14:04

Yes. In the US bathtubs generally come in 5 foot and 6 foot lengths. This is the actual length of the unit, and hence the rough in stud to stud distance should be the same.

  • 1
    In my experience, fitting a thing in a roughed-in opening of exactly the same dimensions is a recipe for frustration. You always want some space for play. – isherwood Feb 8 '19 at 14:03
  • I agree with @isherwoods comment, some tubs and or surrounds are slightly longer and some slightly shorter. A measurement of the tub + at least 1/4 to 1/2" is what I use you don't want the fit two tight as that can void the warranty on the molded tubs I have installed. – Ed Beal Feb 8 '19 at 15:29

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