![SECTION J-4](/images/new-backgrounds/35648/3564875x1.webp)
SECTION | Vertical Direct Venting/Combustion Air (Category I) | ||||||||||||||||||
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Figure
VERTICAL DIRECT VENTING WITHOUT
*Vent lengths are based on a lateral length of 2 feet. Refer to the latest edition of National Fuel Gas Code for further details (ANSI Z223.1) or in Canada the latest edition of
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