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Sizes By MERV Fit help
Find my size

Replacement filters, sized for real installs.

Electrostatic pleated packs for furnace, AC, and heat pump returns with clear nominal vs. actual dimensions.

Best-selling sizes.

Browse hero SKUs and jump to checkout-ready collections.

Top pick

16x25x1

MERV 8 · 4-Pack · Actual ~15.5x24.5x0.75 in
$33.96
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Value

20x20x1

MERV 8 · 4-Pack · Actual ~19.5x19.5x0.75 in
$29.96
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Whole-home

20x25x1

MERV 8 · 4-Pack · Actual ~19.5x24.5x0.75 in
$37.96
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Compact

16x20x1

MERV 8 · 4-Pack · Actual ~15.5x19.5x0.75 in
$32.96
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Allergy

16x25x1

MERV 11 · 4-Pack
$33.73
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Max capture

16x25x1

MERV 13 · 4-Pack
$44.96
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Not sure which MERV?

Start at MERV 8 for everyday dust and lint. Move to MERV 11 when pollen or pets spike symptoms. MERV 13 is for stronger fine-particle capture if your system can handle it.

Open MERV guide