Manufacturer Part Number: PRO21912181|Filter Type|Wireless PleatedPleat Type|Wireless PleatedFilter Efficiency|Media Material|SyntheticFrame Material|Clay Coated Paper BoardAir Flow|563CFMMaximum Velocity|Particle Capture Efficiency (%)|Merv Rating|8Nominal Depth (Inch)|1Nominal Depth|1inNominal Width (Inch)|18Nominal Width|18inNominal Height|12inNominal Height (Inch)|12Media Color|Media Area|Section Width|Initial Resistance|0.19 (at 300 FPM);0.26 (at 375 FPM) in wgNumber Of Sections|Number Of Media Plys|Integrated Frame|YesActual Depth (Inch)|7/8Actual Depth|0.875inMaximum Air Flow (FPM)|500Actual Width (Inch)|17-1/2Actual Height (Inch)|Actual Width|17.5inInitial Resistance at FPM (Inches w.g.)|Actual Height|11.38inFor Use With|Any UnitStandards|UL 900Final Resistance at FPM (Inches w.g.)|1Capacity|HighFeatures|EPP 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|