If you can settle for acrylic, Kohler's 60x32 Archer tub is 45-1/8 inches long at the bottom of the basin. It is 15 inches deep. My daughter put it in her bathroom recently and she loves how comfortable and deep it is.

Any chance you could go to 61'? I just had the Cheviot tub installed and the interior base is 41'. It is a very comfortable tub.

Here is a link that might be useful: pedestal tub

Thank you badgergal, the Archer is definitely going on my list now. It's more narrow than my current tub but its deeper.

Scpalmetto, thank you but I am actually worried about hitting 60". When I get home I'll put up a picture of what I'm working with. The shower is right next to the tub so I'm unsure if I can go even another inch.

I tried out a 60"L Archer in a showroom and found it way too narrow to be a comfortable tub. It becomes narrower under the armrests which is where it matters. I do like the overflow drain setup, but not much else.

I have to say I don't uncerstand the fascination some people have with cast iron tubs. I've used them - they do NOT last forever (the older ones often have scraped enamel or chips), it is hard and cold, and the supposed keeping water warm doesn't seem to make much difference in real use.

The Rubix seems to have the largest interior of 5' tubs, but I'm not sure how comfortable the backrest will be for leaning against. Several on this forum have bought one recently, am I'm anxiously awaiting their reviews.

Hi Lee676,
This is our issue. We know this will be our last remodel. We need materials that will last. The hall bath tub is original to the house-1975 in great condition. We won't have to replace it. I can't afford to put in a tub I'll need to replace in 2035 when I'm 65 and retired. And I'm worried that will happen with acrylic.

Since acrylic is ubiquitous though, I'd love to hear more stories from people who have had one last for many many years.

I found one! I was looking at MTI products for a counter and sink for myself. They make tubs, too. Their acrylic tub Basics line has the
MBIS6032
Integral-Skirted Tub
60" x 32" x 19.25"
And the water depth to the overflow is 14.5. The back wall of the tub is situated more upright for more leg room and it gives you 47.5" of length. Their
MBRR6032E
59.25" x 31.75" x 18.5"
gives a 14" deep bath with 42" of length.
MBIS6042
Integral-Skirted Tub
60" x 42" x 20.25"
gives you a bath 14.5" deep and 48" long!
Mind, these tubs can be purchased as jetted tubs, air massage tubs, or as soaker tubs. You have to find a dealer near you to get the real price. I have learned that it is considerably less than the list or MSRP - at least for their sinks. They are made in Georgia at an employee-owned factory.

Here is a link that might be useful: MTIbaths.com 5 ft bath tubs click on model # to get specs

Look at the Hdrosystems Lacey, Marlie and Sydney. I am in the hunt for the same type of tub and these are my fore runners. Americh also has tubs that are as deep as 20" and 17" at the water line. If you get a deep tub, consider integrated grab bars.
Homepro01