reply to acid343211
Re: Wall mounted a/c units I put the backer rod on both the a/c units in the kitchen n the living room ones
and its holding the cool air inside longer
during the night i had only one a/c going in the kitchen and its holding it at 75"
befoire i had to have both a/c's units running to maintain the cool air inside..
i love it
if only i have known about this back rod.. a long time ago..
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