METRIC

Fiberglass shall be as outlined in the North American Insulation Manufacturing Association (formerly T.I.M.A ) specification, or P.E.B. 202 or equal, with an R-value of ______ when not compressed.  The fiberglass shall be faced on one side.  The composite of fiberglass and facing shall have surface burning characteristics not to exceed 25 flame spread and 50 smoke developed when tested in accordance with Underwriters Laboratories 723 test method or ASTM E 84 test method.

Facing shall be composed of 38.1 micron white polypropylene film, a reinforcing layer, and 12.7 micron metallized polyester film.  The product shall be reinforced with a 16/100 mm x 16/100 mm tri-directional fiberglass scrim.  The resulting facing shall have a water vapor transmission rate of 1.15 ng/N^.s (ASTM E96, Procedure A), and a mullen burst of 7.0 kg/cm².  Tensile strength shall be 6.1 kN/m in the machine direction and 6.1 kN/m in the cross-machine direction.