4'' x 6 5/8'' DirectVent Pro

Direct Vent Pro chimney systems feature state of the art engineering and manufacturing. Tight inner connections offer superb performance without the use of gaskets or sealants (unless specified by the appliance manufacturer) making Direct Vent Pro not only an industry leader in innovation also but easy to install. Direct Vent Pro chimney systems will require different clearances to combustible materials and should be specified by the appliance manufacturer.
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