#3833 • (48) 4'x4' EnergyGuard Taper ISO Panel X Insulation Sheets Part of Building Materials: Insulation Sheets, Shingles, 4x8 OSB (165770) (timed auction by Bid-2-Buy) Status: Sold .5" - 1.5" 20 PSI (48) Pieces = 768 Sq. Ft.