Product Details: Manufacturer Part Number: PRO21546|Filter Type|Wire-Backed PleatedPleat Type|Wire-Backed PleatedFilter Efficiency|Media Material|SyntheticFrame Material|Beverage BoardAir Flow|1650CFMMaximum Velocity|Particle Capture Efficiency (%)|80-85Merv Rating|13Nominal Depth (Inch)|4Nominal Depth|4inNominal Width (Inch)|24Nominal Width|24inNominal Height|20inNominal Height (Inch)|20Media Color|Media Area|Section Width|Initial Resistance|0.34 (at 500 fpm) in wgNumber Of Sections|Number Of Media Plys|Integrated Frame|YesActual Depth (Inch)|3-3/4Actual Depth|Maximum Air Flow (FPM)|500Actual Width (Inch)|23-3/8Actual Height (Inch)|19-3/8Actual Width|Initial Resistance at FPM (Inches w.g.)|Actual Height|For Use With|Any UnitStandards|UL 900; ASHRAE 52.2Final Resistance at FPM (Inches w.g.)|1Capacity|HighFeatures|Earns LEED pointsEPP Indicators|Width (Inch)|Maximum Temperature (F) ( - 0 Decimals)|150Length (Feet)|Core Type|Arrestance Efficiency (%)|Thickness (Inch)|Final Resistance at FPM (Inches w. g.)|Maximum Termperature (F)|Product Service Code|UNSPSC Code|