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High Efficiency Appliance Venting

UL 1738/ULC S636 Listing

Special Gas Vent

AMPCO models VSI/IVSI/N with special gas vent listing, are positioned to complement Heatfab Saf-T Vent® product by broadening the applications on commercial and industrial projects requiring large diameters, above 32” ID, specifications calling for double-wall construction with greater than 1” of insulation, and projects requiring a 2-hour fire rated chimney:


Features & Benefits

  • Tested and listed to UL 1738/ULC S636
  • Ability to expand offering up to 48” diameter (ID) to fit wide range of applications
  • Zero clearance model featuring integral 2-Hour Fire Rating, tested and listed to UL 2221
  • Single wall and double wall air/fiber insulated models
  • Stainless steel material grade Type 316 inner wall, with several outer wall options
  • Viton® 550 °F SGV field applied sealant; New AMPCO Part No. 4000004
  • Array of components and accessories designed to make installation simple and quick
  • Available on 5-7 Day Quick Ship Program
  • 5-Year Limited Warranty standard for Special Gas Vent applications

ANSI Category I, II, III or IV Appliances: 
  • Boilers
  • Water Heaters
  • Furnaces

Double Wall Models VSI / IVSI

Single Wall Model N