Commercial Products  >  Chimney & Grease Duct
Special Gas Vent

Single or Double Wall Special Gas Vent

PowerStack EPSC/EPSC+ is a single or double wall special gas vent system designed with the installer in mind. A factory-installed integral seal and “no-tool” snap-lock assembly, makes it a go-to product for any condensing appliance offering reduced installation time for the installer.

Special Gas Vent EPSC


      • Manufactured using a fully welded construction together with precision formed close tolerance joints
      • 4” to 14” diameters (ID) to fit the wide range of residential applications
      • Corrosion resistant 316L-PCM stainless steel material
      • Condensate and pressure resistance is achieved by a bonded 3-lip elastomer seal for quick & easy installation
      • Joints locked in place with snap-lock locking band (no tools required) for extra rigidity
      • Up to 480° F maximum temperature rating with low clearance to combustibles
      • Available with a wide range of support components that cater for both lateral and vertical structural loading of the product
      • Tested and listed to UL 1738 (Special Gas Vent), ULC-S636 (Type BH Gas Vent)
      • Special components available
      • Backed by ENERVEX 1-Year/15-Year Limited Warranty


Material 316L-PCM Stainless Steel
Max. Pressure 15 inWG (3,700 Pa)
Max. Temperature 480°F (250°C)
Warranty 1-Year Warranty
15-Year Limited Warranty
Listing Certification UL1738, Standard for Venting System for Gas-Burning Appliances, Catetory II, III and IV
ULC-S636, Standard for BH Gas Venting Systems

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File No. MH64314

EPSC/EPSC+ single and double wall special gas vent components
ADM Automatic Damper - Slip Fittings—closes the appliance connector when the appliance is shut off
Automatic Damper - Slip Fittings

The Automatic Damper is an energy-saving device that closes the appliance connector, when the appliance is shut off. For chimneys with slip connections.