Underwriters Laboratories
Inc.® BPHX
Loose Fill Material
Mountain Fiber Insulation Inc.
1880 E Anvil Blvd. PO Box 337, Hyrum, UT 84319 R9171 Cellulose fiber chemically treated
to reduce combustibility.
Classified in accordance with the following ASTM-C739-91
characteristics: FLAMMABILITY CHARACTERISTICS Critical Radiant
Flux: Smoldering Combustion: | Greater than
or equal to 0.12 W/cm sq
Less than or equal to 15.0 percent |
ENVIRONMENTAL CHARACTERISTICS Corrosive: Smoldering Combustion: | Acceptable Acceptable |
PHYSICAL CHARACTERISTICS Density (settled)
Thermal Resistance Moisture Absorption Odor Emission | 1.6 pcf (25 pound
bag)
1.8 pcf (30 pound bag) 3.75 R / in. (at 4
in. thickness) Acceptable Acceptable |
Look for
classification marking on product. | 
