by | Jul 4, 2026
6 Pack of 20x20x4 MERV 11 Pleated 4″ Inch Air Filters for AC & Furnace by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4 ● Filtration Rating: MERV 11. Comparable to 3M/Filtrete MPR rating 1000 to 1200, or FPR rating 7. ● Effectively reduces pollen, dust,...
by | Jul 4, 2026
20x20x4 Air Filter for A/C or Furnace by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4. Filter Rating: MERV 11 | FPR 7 | MPR 1000. Sold in Packs of 6. 20x20x4 MERV 11 filters for your air conditioner or furnace are built to promote better airflow throughout your...
by | Jul 4, 2026
20x20x4 A/C Furnace Air Filter by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4.. Filter Rating: MERV 13 | FPR 10 | MPR 2200. Sold in Packs of 2For your furnace or air conditioner, the 20x20x4 MERV 13 air filter efficiency ratings make these filters an excellent...
by | Jul 4, 2026
Glasfloss ZL 18x24x4 MERV 10 (FPR 7) Pleated HVAC Air Filters. Case of 6 Exact Filters Size: 17-1/2 x 23-1/2 x 3-3/4| Nominal Size: 18x24x4• Air Particles Filtered: Bacteria, Dust Mites, Dust, Lint, Mold Spores, Pet Dander, Pollen, Smog, Allergens, Cough & Sneeze...
by | Jul 4, 2026
20x20x4 Air Filter for A/C or Furnace by Glasfloss. Actual Size: 19-1/2 x 19-1/2 x 3-3/4. Filter Rating: MERV 11 | FPR 7 | MPR 1000. Sold in Packs of 2 20x20x4 MERV 11 filters for your air conditioner or furnace are built to promote better airflow throughout your home...
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