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MERV Rating
MERV 8 (1)
MERV 11 (1)
MERV 13 (1)
Nominal Length
20 (3)
Nominal Width
21.5 (3)
Nominal Depth
4" (3)
20x21.5x4
Nominal Size
Actual Size
Merv Rating
Bulk Quantity Pricing
4
6
12
48
72
120
Quantity
20x21.5x4
20x21.5x4
MERV 8
$28.06
$25.25
$24.69
$23.85
$21.05
$19.64
Add to Cart
20x21.5x4
20x21.5x4
MERV 13
$29.74
$26.77
$26.17
$25.28
$22.31
$20.82
Add to Cart
20x21.5x4
20x21.5x4
MERV 11
$36.78
$33.10
$32.37
$31.26
$27.59
$25.75
Add to Cart