Call To Order: 877.234.PIPE

Xi1 Commercial & Industrial

A double wall prefabricated venting solution for use as a negative, neutral or positive pressure system in many applications including but not limited to Category I Gas, Oil, Dual Fuel, Special Gas Vent, CHP Venting, Generator Exhaust, and Fireplaces. Xi1 can be used in Breeching Systems, Exterior Stacks, New Construction or Extensions. The FIRST and only of its kind to ever be manufactured right here in NEW YORK.


No one knows America’s chimneys like Lifetime Chimney Supply. It’s our company mission to manufacture and supply the best commercial and industrial venting systems that are both safe and efficient for all your venting needs.

Call 877.234.PIPE (7473) or Email Us
For more information on our commercial grade products and services, call or email Lifetime Chimney Supply. We are here to answer all of your questions and provide you with the highest level of support for all of your commercial jobs and needs.

We also offer technical assistance for contractors and engineering firms which include design, draft and structural calculations that can solve any job-site issues.

Xi1 Commercial & Industrial

  • Tested and Listed to UL 103 Type HT 2100 °F Intermittent Temperature
  • Tested And Listed to UL 2561 1400 °F Continuous Temperature
  • Tested and Listed to UL 1738 Special Gas Vent
  • Up to 48" diameter
  • Record breaking distance to combustibles
  • 8 lbs. density Superwool (non toxic)
  • Huge library of approved parts
  • Fastest fabrication time in the industry
  • 100% Stainless Steel supports and hardware
  • Strongest approved supports proven
  • Free job site delivery
  • Additional parts added and delivered at no cost
  • Same- Day install date with support team on stand-by
  • Mill Certified 304-316 and 444 steel grades
  • 25 year warranty




Liftime Loyalty - As True As Steel

Our customers remain loyal because we craft the highest quality
stainless steel chimney liners while offering unrivaled
customer service for the best buying experience.