#1487 • 27-Pieces 1.75" GAF EnergyGuard Part of GAF EnergyGuard Polyiso Insulation: Flat & Tapered (158071) (timed auction by Bid-2-Buy) Status: Sold 1.75" 27 Pieces LTTR 10 20 PSI 1512 BD FT 864 SQ FT Energy Guard ISO 1.75" x 4' x 8'