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Mountain Fiber Insulation
Important facts about our insulation:
Higher R Values per Inch
100% Borate Fire Retardant
More Effective than Fiberglass Insulation
80% Recycled Paper & 20% Fire Retardant
Underwriter Laboratory & Energy Star Labeled

TYPE            R FACTOR (per inch thickness)

Mountain Fiber Cellulose     3.75

Rockwool                           2.93

Fiberglass                           2.20

(Based on ASTM C177)
 
 
 
Milgard Windows