Features and Benefits:Made in USA;22 x 22 x 1", MERV 8, 35% Efficiency, Wire-Backed Pleated Air FilterSpecs:Filter Type Wire-Backed PleatedNominal Height (Inch) 22Nominal Width (Inch) 22Nominal Depth (Inch) 1Particle Capture Efficiency (%) 35MERV Rating 8Media Material SyntheticIntegrated Frame YesActual Height (Inch) 21-3/4Actual Width (Inch) 21-3/4Actual Depth (Inch) 3/4Maximum Air Flow (FPM) 300CFM 1000Initial Resistance at FPM (Inches w.g.) .14 (at 300 fpm)Final Resistance at FPM (Inches w.g.) 1Maximum Temperature (F) 200Capacity StandardPleats Per Square Foot 12Frame Material PaperboardFor Use With Any UnitStandards Met ASHRAE 52.2-2012; UL 900