Bath replacement 168cm by 68cm

Hello,
Trying to source a replacement bath quickly but measurements are causing a problem. Walled on 3 sides and a little of 4th wall so can’t opt for a bigger size. Have searched done deal etc...few ads give measurements. Anyone know where I might get one?
Thanks

It's an old 5'6" bath. They'll be advertised as 1675mm. You'll have to call around a few bathroom places / builders providers - not a very common size so not everywhere will carry stock.
Width might be a problem though. Standard width is usually 700mm.

Edit: looks like 1,685 X 685 might be a possible size available in some brands.

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PH Ross