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Even an isolated fire in a public building
could adversely affect the strength and
safety of the roof structure or floor above
the fire. For this reason, the building codes
of many localities require fire-resistant
ceiling systems in public buildings. This type
of ceiling acts as a “protective membrane”
to help confine the fire to its area of origin.
All components, including loudspeakers,
must be specifically approved for use in
a fire-resistant ceiling. Any openings, such
as those required for loudspeakers, must
be properly sealed to maintain the ceiling’s
integrity. A metal-can loudspeaker system
seals the opening but cannot maintain the
ceiling’s fire-resistance properties because
the metal readily conducts the heat of the
fire into the space above the ceiling. Atlas-
Soundolier’s FR Series solves this problem
by both sealing the opening and blocking
the heat of the fire, thereby maintaining
the fire resistance properties of the ceiling.
Underwriters Laboratories proved the
effectiveness of the FR Series in a 3-hour
fire test under UL Standard 263, “Fire Tests
of Building Construction and Materials.”
Part 1
Introduction and Executive Summary
As a result of the UL testing, the FR Series Fire-Resistant Speaker
Assemblies carry the UL mark and are “UL Classified” for use in
specified 1-hour, 2-hour and 3-hour, fire-resistant ceiling systems.
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