KaptJaq
Minister of Fire
You seem to know a lot about this, is there insulation u can put around the block off plate to keep heat in
Roxul or mineral wool can be put above the block-off plate to help seal the opening. Just make sure the pipe extends well above the mineral wool and the outlet is not obstructed in any way.
KaptJaq
Also, as BG said, seal the edges with silicone...
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