Polyester Link Air Filter, 150 In L

Polyester Link Air Filter, Section Height 25 In., Section Length 25 In., Total Length 150 In., Sections per Carton 6, Ply 2, Filter Efficiency 25 Percent, Thickness 1 In., Frame Type Internal Wire Heat Sealed Inside Layers, Air Flow 500 fpm, Initial Resistance 0.28 In.WC, Final Resistance 1 In.WC, Max. Temp. 120 Degrees F, Standards UL Class 900. Only shipped in quantities of 4.