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1905 1991 UNIFORM MECHANICAL COD� <br /> 4. Makeup air. Provisions shall be made for air to enter the room in which a <br /> kiln is installed at a rate at least equal to the air being removed through the kiln <br /> hood. <br /> 5.Hood and duct clearances.Every hood and duct serving a fuel-burning kiln <br /> shall have a clearance from combustibie construction of at least l8 inches. This <br /> clearance may be reduced in accordance with Table No. 5-B. <br /> (�Exterior Installations. Kilns shall be installed with minimum clearances as <br /> specified in Subsection (e) I of this section. Wherever a kiln is located under a <br /> roofed area and is partially enclosed by more than two vertical wall surfaces, a <br /> hood and gravity ventilation duct shall be installed to comply with Subsections(e) <br /> 2, (e)3 and(e)5 of this section. <br /> -�4kI���'►'�t:�4 ', � <br /> 150 <br />