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MERV Rating
MERV 8 (1)
MERV 11 (1)
MERV 13 (1)
Nominal Length
13 (3)
Nominal Width
21 (3)
Nominal Depth
4" (3)
13x21x4 Air Filter
Nominal Size
Actual Size
Merv Rating
Bulk Quantity Pricing
4
6
12
48
72
120
Quantity
13x21x4
13x21x4
MERV 8
$20.08
$18.07
$17.67
$17.07
$15.06
$14.06
Add to Cart
13x21x4
13x21x4
MERV 13
$22.87
$20.58
$20.13
$19.44
$17.15
$16.01
Add to Cart
13x21x4
13x21x4
MERV 11
$21.47
$19.32
$18.89
$18.25
$16.10
$15.03
Add to Cart