"Arthur 51" wrote in message
...
I am about to order a sheet of 1500mm x 500mm (opal)
perspex. It will be in a position avove head height when installed.
I don't wether to buy 3mm or 5mm thickness...is 3mm very fragile?

Thanls.

Arthur

Id go to a local sign manufacturer. They will undoubtedly have opal in both
thicknesses and possibly let you handle it to satisfy yourself which to go
for.