Shower screen widths?

| have a shower in a enclosure with brick walls on 3 sides, which im going to re-tile an fit a new shower to along with a new screen to replace the curtain. The width of the entrance is not exactly 760mm.

Are the pivot doors that are this width adapt slightly? Can they be amde slightly longer or shorter, or does it involve cutting and trimming the door?

Thanks.

they useally have about 40mm adjustment on the frame.

Brilliant, thankyou.