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Build your own custom AC or furnace filter in a few easy steps
Nominal Size
Actual Size
Merv Rating

Bulk Quantity Pricing

4 6 12 48 72 120
Quantity

12.75x21x1

12.75x21x1

MERV 11

$14.43 $12.99 $12.70 $12.27 $10.82 $10.10
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12.75x21x2

12.75x21x2

MERV 11

$17.83 $16.05 $15.69 $15.16 $13.37 $12.48
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12.75x21x4

12.75x21x4

MERV 11

$21.47 $19.32 $18.89 $18.25 $16.10 $15.03
Add to Cart