#2269 • (26) 4'x4' EnergyGuard Taper ISO Panel B Insulation Sheets Part of GAF EnergyGuard Polyiso Insulation: 4'x4' and 4'x8' (163709) (timed auction by Bid-2-Buy) Status: Sold 1.5" - 2" 20 PSI (26) Pieces = 416 Sq. Ft.