Nominal Size: 18x20x1 Actual Size: 17-1/2 x 19-1/2 x 7/8 1 Inch Depth Filter Filtration Rating: MERV 10. comparable to MPR rating 600 to 800, or FPR rating 5 to 6. Shields from Dust, Pet Dander, Smoke, Smog, Lint, Pollen, and other small particles. Air Flow: comparable to MERV 8 with improved filtration. Durable & Long Lasting: Heavy duty frame wont buckle or support growth. Made in the USA. For optimal performance, recommended to change at least every 3 months.
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Item# : SPM12802741316
Model # : ZLP18201