Well I think coroplast as a grille block material in sub zero temps is a bust. Mine is perforated in multiple locations from road sand being kicked up into it. I'm not sure how it would do in warmer locations. It'll do for now, but I'll be looking to replace it before next winter.
Speaking of winter, sorry about the low numbers guys. We've been hit with yet another snow storm. Today I drove 97km of road that could have just as well been a curling rink. Yikes!
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