For single inlet evaporative coolers. Grooved. Use on MasterCool and AeroCool coolers. Heavy cellulose construction for long life. Fast wet-out. High air velocity. Impregnated with plastic resins and anti-rot agents. 8 In. Deep. Boxed. No. 3437: Material: Cellulose/Plastic Resin, Width (In.): 40, Height (In.): 23, Depth (In.): 8, Pkg Qty: 1, Package Type: Box No. 3438: Material: Cellulose/Plastic Resin, Width (In.): 40, Height (In.): 28, Depth (In.): 8, Pkg Qty: 1, Package Type: Box
