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After having problems keeping my temps down smoking bacon I am ready to do the mailbox mod. Amazon had a mailbox with slight damage for $11.69 and a flexable duct for $8.
Just need to get adapters. Would a 3" hole saw cut a hole big enough for 3" adapters to go through?
Yes, the adapter will have tabs to bend over which are dimension-ally forgiving. Or just pencil around the adapter and use metal snips. Silicone around to fill any gaps.
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