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DirectVent Pro Installation Guide

DirectVent Pro Installation Guide

BY Collin Champagne Aug 17, 2025

DirectVent Pro by Simpson Duravent is a unitized, coaxial venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces. DirectVent Pro features tight inner connections for superb performance, with no gaskets or sealants required (unless specified by the appliance manufacturer). All black pipe lengths, pipe extensions, and elbows feature laser-welded outer wall seams for a sleek finish. Low-profile locks and no hems or beads allow for a beautiful product that looks elegant in any interior.

DirectVent Pro Installation Guide

DirectVent Pro, in combination with the gas appliance, has been tested and listed as a decorative gas appliance system or as a direct vent heater system by a major testing agency, such as UL, CSA, Warnock Hersey, or OMNI.

About the Author

Collin Champagne

With over 13 years in the industry, Collin is a National Fireplace Institute (NFI) certified technician and managed content for the eFireplacestore and eCanopy brands. He has achieved the highest NFI certification possible as a Master Hearth Professional and is certified in all three hearth appliance fields: wood, gas, and pellet. With experience with sales and in-field installations, his expertise shines through his technical knowledge and way with words.

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Customer Q&A with Product Specialists

Steve H. from Waco Texas asked:
I'm trying to trim out a 4/12 pitch interior ceiling where a 6" stove pipe penetrates it. I ordered a Duratech roof trim collar from you, but I suspect it's not the correct part. I've called Duratech multiple times without success. If the product I ordered isn't suitable, could someone please call me to let me know what I should be ordering? My name is Steve Henry and my phone number is 254-749-3187.
I'm trying to trim out a 4/12 pitch interior ceiling where a 6" stove pipe penetrates it. I ordered a Duratech roof trim collar from you, but I suspect it's not the correct part. I've called Duratech multiple times without success. If the product I ordered isn't suitable, could someone please call me to let me know what I should be ordering? My name is Steve Henry and my phone number is 254-749-3187.
The trim collar you ordered is not suitable for black stovepipe/chimney connector. It is designed for the stainless steel DuraTech chimney pipe with a 6" inside diameter (8" outside diameter). For a traditional wood stove chimney where the pipe penetrates a ceiling, you would typically use a ceiling support box, which includes its own trim. An example of this would be the 24" Square Ceiling Support Box, which is designed for 6" inner diameter chimney pipe.
Answered by: Tyler M. on Apr 20, 2026

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Jpb from Oswego, New York asked:
Looking to install a propane gas-burning heating stove in a sunroom that has many windows. Looking for guidance on minimum clearances from windows and walls.
Looking to install a propane gas-burning heating stove in a sunroom that has many windows. Looking for guidance on minimum clearances from windows and walls.
If you are referring to the interior placement of the stove, direct vent gas stoves will not have clearance requirements that would be considered comparable to wood stoves, meaning that the clearances will be much more forgiving. However, please note that, just like wood stoves, clearance requirements will be specific to the stove and there will be no standard code pertaining to clearance requirements.
Answered by: Will M.

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