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Filter King 21x23x1 Air Filter MERV 8, AC Furnace Filters (6-Pack) | Dust & Allergy Control (Actual Size: 21 x 23 x .75)
You save $10.39
As of Oct 17, 2026, 09:10 UTC, Filter King 21x23x1 Air Filter MERV 8 is $51.89 at Amazon, 17% below the $62.28 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.
This six-pack of air filters fits 21 by 23 by 1-inch furnace and AC systems with MERV 8 rating (actual depth 0.75 inches). The filters target dust and allergy control in heating and cooling systems.
Before purchasing, verify that your HVAC system accepts 21 by 23 by 1-inch filters by checking your equipment specifications. Confirm the MERV rating is appropriate for your system's requirements. Verify the current price and availability on Amazon, as these details may have changed since our last check.
Color: Black
You save $100.01
as of Oct 17
Length: 300 ft (3 rolls)
You save $3.60
as of Oct 17
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