KSI offers selected ceiling and wall mount loudspeakers which are fabricated from fire retardant particle board. Below are the specifications from the manufacturer relating to the fire rating of this product.
Fire-Rated Particleboard Duraflake FR
80 Tiverton Court, Suite 701
Canada, L3R 0G4
Phone: (905) 475-9686
Durflake FR is a class 1 rated fire retardant particleboard, suitable for a variety of industrial & commercial building applications where stringent building codes, public safety requirements or reduced insurance rates are a factor. It is used as a substrate for wood veneers, high & low pressure laminates and vinyls in wall systems, as well as furniture and fixtures. It can be drilled, routed, bullnosed, beveled and precision machined without affecting the flame spread rating.
Duraflake FR should be specified for interior use only.
Composition & Materials:
Duraflake FR is made from Western soft wood particles & highly effective fire retardant chemicals bonded with special formulas of resins & waxes.
ASTM E 84 tunnel test.
Material & Equipment Acceptance Division, New York City.
ASTM C 236, Guarded Hot Box test.
UL 723 Test for Surface Burning Characteristics of Building Materials.
BOCA, ICBO and SBCCI
City of New York MEA 177-78-M;
State of California Fire Marshall 2660-831:1;
City of Los Angeles RR 24811;
City and County of San Francisco 258 W34.1.
Underwriters' Laboratories, Inc. Classified Wood Particleboard:
Surface Burning Characteristics, UL 723-- (Based on 100 for untreated red oak)
See UL Classified Building Materials Index. Listed under wood particle board.
Thermal Conductivity (K) and Thermal Resistance (1/K=R)*:
* R & K values obtained using ASTM C 236.
Thermal conductance and transmittance of built-up wall sections by means of the Guarded Hot Box in tests conducted by Northwest Testing Laboratories.