What size shower screen

[HippyKayYay]

For a 1600 x 900 shower tray? It's fitted against two walls. So just need a glass shower (or 'wetroom') screen to go along one size, with the end being open. Like this
https://www.sanctuary-bathrooms.co.uk/crosswater-svelte-walk-in-glass-panel

Am about to buy a 1200 screen, but now I'm wondering if that's long enough to stop water splashing out onto the floor?

If you have space to comfortably enter the shower, I would get a 160 cm screen for the whole length. 120 may be too short to prevent splashing, especially if kids will use it? (I will soon find it out myself :) )