Phone: +1 678-388-2740

    Double wall stainless steel exhaust systems

    Chimneys made of stainless steel with high quality insulation material, available in different designs, materials and colors.


    Pressure-tight air-insulated exhaust system made of stainless steel

    System features



    Double Wall Special Gas Vent

    Inner Liner Material

    444 or ASTM 316L stainless steel

    Outer Jacket Material

    ASTM 304 stainless steel - BA Finish 

    Wall thickness

    Inner Liner 0.020" (diameter 3'' - 12" I.D.)
    Inner Liner 0.035" (diameter 13'' - 36" I.D.)
    Outer Jacket 0.020" (diameters 3'' - 12'' I.D.)
    Outer Jacket 0.025" (diameters 13'' - 24'' I.D.)
    Outer Jacket 0.035" (diameters 26'' - 36'' I.D.)

    Inner diameter

    3 - 36'' 


    Ø3 – Ø12” – 1” insulating air space

    Ø13 - Ø36” – 1.25” insulating air space


    Ø3 – Ø12” - Industry leading 2.28” overlapping joint with silicone 3-ribbed gasket

    Ø13 - Ø36” –  Inner connection is a 1.25” conical overlapping joint with added ½” rolled flange and vee band connection. Supplied sealant is used in the vee band to make seal.

    Locking band

    Attached to each part

    Main features

    • All-stainless steel construction with 25-year warranty.
    • Assurance of finest quality and reliability.
    • Quick and easy installation.
    • Patent Pending field cutable length for maximum flexibility during installation.


    Jeremias Special Gas Vent was designed specifically for the condensing boiler market where ease of assembly, overall time invested, and price are the main concerns.
    Unlike our other products, this Special Gas Vent will not have a conical joint, rather a gasket to seal the male-to-female connection and secured by a locking band. For use with temperatures not exceeding 550°F continuous and pressures not exceeding 20” WC.

    UL Listings (and ULC)

    UL-1738 Standard, Venting Systems for Gas-Burning
    Appliances, Categories II, III & IV

    ULC-S636 Standard for Type BH Gas Venting Systems

    25 years warranty!