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Filter King 20x20x4 Air Filter MERV 8, AC Furnace Filters (4-Pack) | Dust & Allergy Control (Actual Size: 19.5 x 19.5 x 3.75)
You save $6.01
As of Oct 13, 2026, 16:42 UTC, Filter King 20x20x4 Air Filter MERV 8 is $52.95 at Amazon, 10% below the $58.96 list price.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Filter King 20x20x4 air filters are designed for AC and furnace systems, offering dust and allergy control. This four-pack of MERV 8 rated filters suits homeowners and renters needing standard replacement filters for HVAC maintenance and indoor air quality.
Check the current listing to verify availability and confirm seller details before purchasing. This product has been marked down at Amazon in the past, and this page updates automatically if it becomes discounted again.
You save $10.00
as of 3:42 PM UTC
Pieces: 4 pieces · Size: 4IN(M10)
You save $3.50
as of 3:42 PM UTC
You save $4.00
as of 3:42 PM UTC
Color: White · Size: 7.9 x 6.1 x 3.1 Inch
You save $8.00
as of 3:42 PM UTC
Pack: 3 Pack · Color: Black · Length: Knee-Length
You save $15.01
as of 3:42 PM UTC
You save $16.00
as of 3:42 PM UTC
