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Originally Posted by SeniorityFedup  Hello andre,
interesting to learn as l have read on here before that a personal preference amongst another designer in this topic is say 8lbs (and if memory serves me right, it would be for 4" panels) .Do l pressume you will state this not to be optimum? Thank you mr avare. |
I have always found 8 pound to be optimum at 4", but 4.5 lb/ft3 I am sure is fine.
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