The important measurement is not the width of the glass. It is the opening your body can use, in a room that also contains a towel, a bathmat, and somebody brushing their teeth.
Draw the handle as well as the glass
For a hinged or pivot model, mark its specified movement on the floor. Include the handle projection and the towel rail. Check where you stand to open it and whether the door can meet a hard object. Do not assume every pivot operates the same way.
A sliding model avoids that large swing into the room. But panel overlap limits entry, and the position of the fixed and moving panels changes how you reach the controls. Check the actual model drawing, not a generic "sliding" symbol.
Make cleaning part of the demonstration
Ask to see the overlaps, bottom guide, seals, and any manufacturer-approved cleaning access. Reach where the water will dry. A beautifully spare showroom door can have a surprisingly busy lower edge.
Kohler’s shower door collection separates sliding and pivot arrangements. Dimensions, opening widths, swing directions, and installation requirements remain model-specific. A door choice also needs to suit the finished opening and wall construction.
Choose the entrance you can use comfortably
Prefer a sliding door when avoiding a swing genuinely improves movement. Prefer a hinged arrangement when the clear space and entry suit the people using it. If accessibility is the priority, assess the entire shower approach with an appropriate designer. A wide-looking glass panel is not an accessibility plan.