Plastic sheets with UV protection

[glow777]

Rescued from a skip a load of plastic offcuts (4' X 2') of the double layered type, a bit like corrugated cardboard.

Looking closely at these they have the blue UV filter on them. I was going to use these to replace some of the broken glass panels on my greenhouse or build a cloche.

But .... what effects will the UV filter have in the plants? Probably only going to use 3 in the greenhouse but keep the rest for emergencies.

[glow777]