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21x21x4 Air Filter

Nominal Size
Actual Size
Merv Rating

Bulk Quantity Pricing

4 6 12 48 72 120
Quantity

20.5x20.5x4

MERV 8

$24.07 $21.66 $21.18 $20.46 $18.05 $16.85

20.5x20.5x4

MERV 13

$22.87 $20.58 $20.13 $19.44 $17.15 $16.01

20.5x20.5x4

MERV 11

$36.78 $33.10 $32.37 $31.26 $27.59 $25.75