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Honeywell FC40R1078 24x24 Return Air Grille Filter
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Honeywell FC40R1078 24x24 Return Air Grille Filter

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Note: Honeywell has changed the depth of their return grill air filters from 4 inches down to 3 inches. Due to existing item inventory you may still receive a 4 inch filter.

The Honeywell FC40R1078 Return Air Grille Filter is a high efficiency, replacement AC filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 24x24x3. This is a genuine Honeywell air conditioning filter.

Honeywell FC40R 1078 Specifications:

  • Nominal Size: 24x24x3
  • Actual Size: 23 3/4" x 23 3/4" x 3"
  • Captures Particles down to .3 microns in size
  • High-Efficiency alternative to one-inch filters
  • MERV 10 Rating
  • 1" Lip

The FC40R features a special design that allows it to fit in the same space as a standard 1" return grille A/C filter, while offering filtration up to forty times more effective (versus 1" fiberglass filters). This filter will clean your air down to 0.3 microns, trap dust, pet dander, pollen, mold, bacteria and other allergens.

The Honeywell FC4 Series replaces older model number F35R Series air conditioning filters and provide a high-efficiency alternative to 1 inch filters. This filter should be replaced at least once per year for maximum efficiency. Filter life based on air quality.