Heatfab, by Duravent Group products

Saf-T Vent® CI Plus is the leading commercial double-wall special gas vent system for condensing heating appliances: Double wall 4"-32" diameters ID. Reduced clearance to combustibles. Patented Sure Seal™ locking system allows quick and easy installation and locks on inner flue conduit for a strong secure joint. Tested and listed to UL 1738 (Special Gas Vent), ULC-S636 (Type BH Gas Vent); Oil: UL 641, ULC S609 and ULC/ORD-441.

Saf-T Vent® SC is a concentric vent system designed for zero clearance installation in light commercial and residential applications:
Concentric venting speeds installation with exhaust and intake through one vent. Size 3"/5" and 4"/7" diameters (ID/OD). Reduced clearance to combustibles. Factory-installed integral seal provides quick and easy installation. Tested and listed to UL 1738 (Special Gas Vent), ULC-S636 (Type BH Gas Vent); Oil: UL 641, ULC S609 and ULC/ORD-441.

Saf-T Vent EZ Seal is the fast and reliable venting solution for Category I, II, III, and IV gas appliances – no field sealant required:
Single wall 3”-16” diameters ID. Engineered with over-lapping joint to keep condensate away from seal. Factory-installed integral seal for quick and easy installation. Tested and Listed to UL 1738 (Special Gas Vent) and ULC-S636 in Canada (Type BH Gas Vent).

Saf-T Vent GC is a single-wall venting system designed for multiple applications on Category I, II, III and IV gas appliances:
Single wall 18”-32” diameters ID. Engineered with over-lapping joint to keep condensate away from seal. Quick and easy installation with Patented Sure Seal™ locking system. Can be combined with single-wall Model EZ or with double-wall CI Plus. Tested and Listed to UL 1738 (Special Gas Vent) and ULC-S636 in Canada (Type BH Gas Vent).

High-Efficiency Appliance Venting - PolyPro. Condensing Applications duravent.com products residential-products polypropylene Special gas vent condensing applications that require 2"-4" diameter; features polypropylene material.