Comparison : Item # PFGS983655, Glass Reinforced Polyester, Extren Fiberglass, Squares, 1/2 inches
Item # PFGS983670, Glass Reinforced Polyester, Extren Fiberglass, Squares, 1 inches
Item # PFGS831036, Glass Reinforced Polyester, Extren Fiberglass, Squares, 1 1/4 inches
Item # PFGS983671, Glass Reinforced Polyester, Extren Fiberglass, Squares, 1 1/2 inches
Item # ER500-125, Glass Reinforced Polyester, Extren Fiberglass Series 500, Rectangles, 1/8 inches