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The international fuel gas code calls for

The international fuel gas code calls for two openings inside a boiler room for combustion air one opening shall be within 12 in of the ceiling and one within 12 in of the floor they shall be sized for 1 in of free space for each 4,000 btuh of fuel burning appliances free area is typically sized at 75% for metal.

Added: 2020-05-09 | Category: one
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