Fire stop outlet for small duct, high velocity air...

Details Fire stop outlet for small duct, high velocity air... Fire stop outlet for small duct, high velocity air...

2006-09-29

2011-10-04

McAllister, Steven B (Department: 3749)

Ventilation

Having inlet airway

Including specific air distributor

C454S286000

Reexamination Certificate

active

08029345

ABSTRACT:
A fire stop apparatus for a small duct, high velocity air distribution system is assembled to a duct opening and includes a cylindrical support wall that supports a cylindrical band of intumescent material that expands and closes the duct opening when subjected to the heat of a fire.

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Bulletin 20-65 Round Outlets, Unico System, May 2004.
LVH-O Series Intumescent Fire Dampers, Circular Fire Dampers; article published in Jul. 2001 issue of Air Transfer Technology; copyright 2000 Lorient Australia Pty Ltd.

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