Glasfloss 20x20x4 MERV 11 AC & Furnace 4" Depth Air Filters. Box of 4. Actual Size: 19-1/2 x 19-1/2 x 3-3/4

Product Price

$74.95

Product Review Score

4.28 out of 5 stars

177 reviews

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Additional Product Details

  • Nominal Size: 20x20x4 | Actual Size: 19-1/2 x 19-1/2 x 3-3/4 | 4 Inch Depth Filter
  • Filtration Rating: MERV 11. Comparable to MPR rating 1000 - 1200, or FPR rating 7.
  • Made in the USA. Note: Does not replace 5" inch or 4-3/8" Depth filters, please check actual filter size needed.
  • Durable & Long Lasting: Heavy Duty Frame won't buckle. Recommended to change every 3 months.
  • Air Filters for homes, business, schools, apartments, hotels, and industrial applications.

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