Quote:
Originally Posted by MGDavid
BB 5.20.8 seems to permit plastic screens of min 4mm thickness - unless another reg overrides it?
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Apologies, you are correct. Maybe the rules have changed over the last 50 years.
However, unless the properties of plastic/Perspex has changed in the intervening years, trying to keep them in good condition would be a nightmare especially in the rain because they scratch so easily unlike glass.