20x21 1/2x4 Aerostar Air Filter
$633.74$792.18-20%
● In stock
Buy at Factory Direct Filters →Price and availability may change. Click to see current details on Factory Direct Filters.
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About this product
These 20x21.5x4 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.
Shop 20x21 1/2x4 Aerostar Air Filter from Factory Direct Filters for $633.74. Compare prices, check for active coupons, and get the best deal on Love Those Deals.
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Frequently Asked Questions
How much does 20x21 1/2x4 Aerostar Air Filter cost?
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20x21 1/2x4 Aerostar Air Filter is $633.74 at Factory Direct Filters, marked down from $792.18 (save 20%). Prices may change — click through to Factory Direct Filters for the latest.
Is 20x21 1/2x4 Aerostar Air Filter in stock at Factory Direct Filters?
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Yes, 20x21 1/2x4 Aerostar Air Filter is currently in stock at Factory Direct Filters.
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Specifications
- Category
- 20x21 1/2x4
- SKU
- 49667247014134
Last updated Jun 4, 2026