A remix of
https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc (stolen bottom reinforcement).
and inspired by
https://www.prusaprinters.org/prints/25714-pomoznemocnicisk-protective-shield (reduced material, zip-ties instead of screws)

The sheet/film width is up to 25 cm. I used the Prusa face shield sheet version - without the holes. PETG was sold-out, so I bought 0.3 mm and 0.5 mm transparent PVC film. The 0.5 mm version is firmer, but the optical quality is worse - less transparency and there are traces of rolling somewhere visible. But the 0.3 mm version is OK. The reinforcement holds its position without any holes on the film.

The holes are sized for 2.5 mm zip-ties. Like those used on Prusa printers. Print the template to easily mark where to punch the holes.

Print instructions

I used 0.6 mm nozzle and 3 perimeters.