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Allows 1 hole in sidewall when venting 2 pipe Modine separated combustion unit heaters
Flanges for quick-mounting to sidewall interior
3-3/4 in round fresh air inlet collar sized to accept 4 in round vent pipe
4-3/4 in round exhaust air opening sized to allow 4 in vent exhaust to pass through to outdoors
5-3/4 in round fresh air/exhaust air collar sized to accept 6 in round fresh air intake pipe
4 in vent exhaust passes through 6 in fresh air intake pipe