CS (CM) & CS Plus Venting Systems for Gas-Burning Appliances
CS & CS Plus are designed specifically for special gas venting applications. They are UL 1738 tested & listed venting systems for categories, II, III, IV or in Canada type BH gas vent. Our CS model is used with appliances burning natural gas and propane. Other standard features include:
- 4″ I.D to 36″ air space and tested up to 550 ℉ (228 °C) and 5″ water column positive pressure.
- The flue is capable of being installed in either interior or exterior installations, 2″ clearance to combustibles, with 0″ clearance to non-combustibles.
The (CM) designation in our part identification number represents our Model CS with an accessory collar (spot welded) added to one end (male end) of the flange that provides an installer friendly connection for our customers, especially with larger diameter sizes.