Suppliers of non-typical length bath panels?

[Colh107]

I'd like to replace my discoloured white plastic bath panel. It (and the bath & room) are 165cm - but standard sizes seems to be shorter or longer.
I've tried googling with the size, but just end up at sites that don't actually do that length.
Anyone know of suppliers who would be worth trying?

 

[Tigercubrider]

How long is too long?
You can cut them