Quote:
Originally Posted by Weasel9992  Typically, yes. But if there's airspace behind the insulation inside the trap, then the hard backing is acting just like the wall would anyway. |
Frank, thanks for your answer! I believed that having the back "open"
would help since people around here is actually making traps with holes cut
in the framing on the sides to maximize the exposure of absortive material...
a.