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Filterbuy Replacement Air Filters Compatible with Aprilaire® / Space Gard®

  • Available in MERV 8, 11, and 13
  • Free shipping
  • Guaranteed to fit
  • Lowest prices
  • Made in the U.S.A.
  • Family owned and operated

CUSTOMER REVIEW

5star

Absolutely the best and most efficient way to purchase furnace filters! No problem finding the filter I needed, filters delivered within a couple of days, fit perfectly and shipping is FREE! What's not to like?

Christine P.

filter 15 3/4 x 27 5/8 x 3 1/2 - MERV 11
15 3/4 x 27 5/8 x 3 1/2 - MERV 11
Actual: 15.75 x 27.63 x 3.75"
Designed to Fit:
Spacegard 2140 #104

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$111.17 ea
1

as low as $ 68.78 when you buy 2 or more

filter 16x20x4 - MERV 11
16x20x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$61.14 ea
1

as low as $ 54.88 when you buy 2 or more

filter 16x25x4 - MERV 11
16x25x4 - MERV 11
Fits AprilAire 1625FG

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$61.14 ea
1

as low as $ 54.88 when you buy 2 or more

filter 16x25x4 - MERV 11
16x25x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.09 ea
1

as low as $ 61.83 when you buy 2 or more

filter 16x28x6 - MERV 11
16x28x6 - MERV 11
Actual: 15.28 x 26 15/16 x 6"
Designed to Fit:
X1444 X4559 X5425

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$111.17 ea
1

as low as $ 68.78 when you buy 2 or more

filter 20 x 25 1/4 x 3 1/2 - MERV 11
20 x 25 1/4 x 3 1/2 - MERV 11
Actual: 20 x 20.25 x 3.75"
Designed to Fit:
Spacegard 2120 #102

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$111.17 ea
1

as low as $ 68.78 when you buy 2 or more

filter 20x20x4 - MERV 11
20x20x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.09 ea
1

as low as $ 61.83 when you buy 2 or more

filter 20x25x4 - MERV 11
20x25x4 - MERV 11
Fits AprilAire 2025FG

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.09 ea
1

as low as $ 61.83 when you buy 2 or more

filter 20x25x4 - MERV 11
20x25x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.09 ea
1

as low as $ 61.83 when you buy 2 or more

filter 20x25x6 - MERV 11
20x25x6 - MERV 11
Actual: 19 3/4 x 24 1/2 x 6 3/8"
Designed to Fit:
X0445 X4560 X5424

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$111.17 ea
1

as low as $ 68.78 when you buy 2 or more

filter 25x20x4 - MERV 11
25x20x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.09 ea
1

as low as $ 61.83 when you buy 2 or more

filter 31x28x4 - MERV 11
31x28x4 - MERV 11

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$88.93 ea
1

as low as $ 79.20 when you buy 2 or more