#3753 • (12) 4'x4' EnergyGuard NH Taper Iso Panel F Insulation Sheets Part of Building Materials: Insulation Sheets, Shingles, 4x8 OSB (165770) (timed auction by Bid-2-Buy) Status: No sale 3.5" - 4" GRF Facers 20 PSI (12) Pieces = 192 Sq. Ft.