Hart&Cooley. SUBMITTER DRAWING install confidence POLYETHYLENE VAPOR BARRIER INSULATION RIGID DUCT (NOT INCLUDED) STARTER CONE SLEEVE IS SHOWN INSTALLED THERMAL CHARACTERISTICS *R-value of 6.0 when measured per MAST C518 at 75°F mean temperature based on insulating same duct size. «2 inch thick, 0.56 PCF density glass fiber insulation Formaldehyde free insulation VAPOR BARRIER «A durable black polyethylene vapor barrier «Perm rating of 0.1 perms when measured per MAST E96, Method A.