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5) Install hinges on rooftop fan. <br /> 506.5.3 IMC—An upblast fan shall be hinged and supplied with a flexible <br /> weathe�p�oof elect�ical cable to permit inspection and cleaning. The <br /> ductwo�k shall extend a minimum of I8"above the �^oof su�face. <br /> 6) Install grease reservoir. <br /> 506.5.2 IMC—A ve�tical discha�ge fan shall be manufactu�ed with an <br /> app�oved d�ain outlet at the lowest point of the I�ousing to pe�mit d�ainage <br /> of gr^ease to an app�oved g�ease �eser^voir. <br />