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MERV Rating
MERV 8 (1)
MERV 11 (1)
MERV 13 (1)
Nominal Length
11.5 (3)
Nominal Width
21 (3)
Nominal Depth
4" (3)
11.5x21x4
Nominal Size
Actual Size
Merv Rating
Bulk Quantity Pricing
4
6
12
48
72
120
Quantity
11.5x21x4
11.5x21x4
MERV 8
$16.68
$15.01
$14.68
$14.18
$12.51
$11.68
Add to Cart
11.5x21x4
11.5x21x4
MERV 13
$27.45
$24.71
$24.16
$23.33
$20.59
$19.22
Add to Cart
11.5x21x4
11.5x21x4
MERV 11
$17.85
$16.07
$15.71
$15.17
$13.39
$12.50
Add to Cart