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You save $4.00
As of Sep 25, 2026, 06:47 UTC, Filterbuy 18x20x1 Air Filter MERV 8 Dust & Allergy Defense (6-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 17.50 x 19.50 x 0.75) is $35.96 at Amazon, 10% below the $39.96 list price.
Lowest recorded: $35.96 · 5 price points tracked
The Filterbuy 18x20x1 air filter six-pack offers essential dust and allergy defense with MERV 8 rating for HVAC systems. These electrostatic pleated filters made in the USA suit homeowners needing furnace and AC filter replacements.
Review the current price and seller information on Amazon's listing before ordering. This product has been discounted at Amazon before, and this page will notify you automatically if it becomes discounted again.
You save $23.00
