20x21x4 MERV 11 AC & Furnace Filters (6 Pack)

SP-20x21x4A-P11M6
Made in USA
List Price: $287.99 Our Price: $143.99 Save: $144.00!
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Made to order (See notes below)
Replace every 3-4 months
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  • Product Overview
This item is made to order, non-returnable, and ships within 3-4 business days. Please check the actual dimensions listed below prior to ordering.
MERV 11 20x21x4 Furnace Filter Overview
  • This is a non-standard size filter. The actual dimensions of the filter are 20" x 21" x 3.625". Please measure your existing filter before ordering to make sure it will be compatible.
  • Long-lasting value package
The MERV 11 20x21x4 furnace & air conditioner filter will remove the following contaminants:
  • Lint & Dust
  • Dust Mite Debris
  • Pollen
  • Mold Spores
  • Pet Dander
  • Auto Emissions
  • Smoke
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