Kingsman Exterior Mount Horizontal Power Vent Starter Kit d9 Infratech also offers a great

Infratech also offers a great selection of other mounting options

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Kingsman Exterior Mount Horizontal Power Vent Starter Kit d9 Infratech also offers a greatThese venting components feature durable construction you can count on, while their easy to assemble design allows for safe and accurate installation. Featuring a variety of customizable configurations, this kit offer a convenient installation option for your fireplace. See configurable options below for a list of products included. Please note, all kits require a one foot section of direct vent hard pipe (sold separately) to connect to the power vent