New Combination Fire Smoke Damper From Greenheck

November, 2009

New Combination Fire Smoke Damper From Greenheck

Model FSD-331 from Greenheck is a three-hour rated combination fire smoke damper with Class I leakage. Featuring a high-strength airfoil-style blade, Model FSD-331 operates with velocity ratings up to 4000 fpm and a pressure rating up to 4 inches wg.  This steel airfoil blade combined with Greenheck’s profile frame design results in the industry’s lowest pressure drop.  Model FSD-331 is available in a vertical mount with a maximum size of 120 inches wide x 96 inches high.


Greenheck, the worldwide leader in manufacturing and distributing air movement and control equipment, offers the most UL certified dampers and the largest selection of AMCA licensed dampers and louvers in the industry.

To obtain more information about this Greenheck announcement you may:

  1. Request information via e-mail
  2. Contact your local Greenheck Representative
  3. Phone us at (715) 359-6171 or fax us at (715) 355-2399
  4. Write us at Greenheck, P.O. Box 410, Schofield, WI 54476-0410
RSS Youtube LinkedIn