#3759 • (12) 4'x4'x4" EnergyGuard Iso Flat With GRF Facers Part of New Roofing Shingles & Insulation: Two-Tone Black Shingles, 4' x 4' & 4' x 8' Insulation (165399) (timed auction by Bid-2-Buy) Status: Sold 4" 20 PSI (12) Pieces = 192 Sq. Ft.