Rinnai FOT-152 9-1/2" - 15-3/4" Flue Manifold B Vent Kit for EnergySaver Direct Vent Furnaces
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The FOT-152 is a 9-1/2" - 15-3/4" Flue Manifold B Vent Kit. It can be used with any Rinnai EnergySaver Direct Vent Furnace. It is to be used through exterior walls that are 9.5" - 15.75" thick. It would be used in place of the Manifold Vent Kit A that that is included with your furnace.