Manufacturer Part Number: PRO16441|Filter Type|Rigid CellPleat Type|Rigid CellFilter Efficiency|Media Material|SyntheticFrame Material|Galvanized SteelAir Flow|500CFMMaximum Velocity|Particle Capture Efficiency (%)|Merv Rating|13Nominal Depth (Inch)|12Nominal Depth|12inNominal Width (Inch)|20Nominal Width|20inNominal Height|20inNominal Height (Inch)|20Media Color|Media Area|Section Width|Initial Resistance|0.16 (at 250 FPM);0.27 (at 375 FPM);0.42 (at 500 FPM);0.60 (at 625 FPM) in wgNumber Of Sections|Number Of Media Plys|Integrated Frame|YesActual Depth (Inch)|11-3/8Actual Depth|11.375inMaximum Air Flow (FPM)|500Actual Width (Inch)|Actual Height (Inch)|Actual Width|19.38inInitial Resistance at FPM (Inches w.g.)|Actual Height|19.38inFor Use With|Standards|UL 900Final Resistance at FPM (Inches w.g.)|1.5Capacity|Features|EPP Indicators|Width (Inch)|Maximum Temperature (F) ( - 0 Decimals)|180Length (Feet)|Core Type|Arrestance Efficiency (%)|Thickness (Inch)|Final Resistance at FPM (Inches w. g.)|Maximum Termperature (F)|Product Service Code|UNSPSC Code|