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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

1-4 6 12 48 72 120
Quantity

28x30x4

27.5x29.5x4

MERV 11

$31.15 $28.04 $27.41 $26.48 $23.36 $21.81
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28x30x4

27.5x29.5x4

MERV 13

$36.60 $32.94 $32.21 $31.11 $27.45 $25.62
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28x30x4

27.5x29.5x4

MERV 8

$31.04 $27.94 $27.32 $26.38 $23.28 $21.73
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