Click HERE for product information and availability BIGBATT™ fiberglass insulation is intended for use in either residential or commercial contruction as thermal and acoustical insulation with an adhered vapor barrier for attics, walls and floors. BIG BATT™ batts are light density and easily cut to fit around wood or metal trusses and joists, and are easily attached under floors and in vertical spaces by stapling tabs. BIG BATT™ fiberglass insulation is also available in Foil and FSK facings in all available sizes. Hi-performance and Catheral ceiling BIG BATT™ batts are available in R-15, R-21, R-30 and R-38 values. S P E C I F I C A T I O N S ASTM STANDARD C 665 Kraft: Type II, Class C Category 1 Kraft: unrated for Flame or Smoke Water Vapor Permeance (ASTM E 96)       Kraft: 1.0 perms Water Vapor Sorption (ASTM C 1104)       5% or less by weight Fungi Resistant (ASTM C 1338: pass) Non-Corrosive (ASTM C 665, 13.8: pass) Odor Emmision (ASTM C 1304: pass) UL® LISTED Unfaced BIGBATT™ insulation batts