CBSR: Double wall, Structural inner wall with a refractory lined inner steel liner

Freestanding Stack

  • Factory-welded joints
  • Available in carbon steel, COR-TEN® steel and stainless steel
  • High temperature insulation
  • Metal jacket is available as an option


Following many years of experience in designing and manufacturing of freestanding steel stacks, Cleaver-Brooks offers factory welded cylindrical freestanding stacks with single, inner and outer structure options.

  • Product Overview
  • Related Resources
  • Applications
  • Complies with ASME, SMACNA, NFPA and ASHRAE
  • Several materials such as Carbon Steel, COR-TEN® Steel, Stainless Steel
  • High temperature insulation
  • Metal jacket when required
  • Many accessories available such as access door, platform, lightning protection, guy-wires, stack drainage, spoiler and anti-vortex equipment
  • Many safety features can be also supplied as needed


Cleaver-Brooks can provide you with the design and manufacture of freestanding stacks according to American and Canadian standards requirements. Our highly qualified engineering department has diversified experience and knowledge in exhausting and venting stacks.


Basics of Boiler Venting for Safe Operation →

This webinar will cover the types of venting categories for condensing and non-condensing boilers and the requirements that need to be met for each., and pursued independence from local electrical grid.

Minimize Draft Loss Through Proper Exhaust System Design →

In this advanced venting webinar, attendees will learn about draft calculations and economizer considerations for single-boiler layouts and common venting.

Stack Installation Video →

  • Process Steam
  • Industrial Process
  • Building Heat
  • Hospital and Healthcare
  • Power and Utilities
  • Refineries and Petrochemical
  • Humidification
  • Laundry and Dry Cleaning
  • Waste Heat Recovery