Scroll Right For More »

18x18x1

Air Filter

18x18x1 Accumulair Furnace Filter APR 2250 18x18x1 Accumulair Furnace Filter APR 2250 18x18x1 Accumulair Furnace Filter Merv 13 18x18x1 Accumulair Furnace Filter Merv 13 18x18x1 Accumulair Furnace Filter Merv 11 18x18x1 Accumulair Furnace Filter Merv 11 18x18x1 Accumulair Furnace Filter Merv 8 18x18x1 Accumulair Furnace Filter Merv 8 18x18x1 Accumulair Furnace Filter Merv 6 18x18x1 Accumulair Furnace Filter Merv 6 18x18x1 Accumulair Furnace Filter Carbon 18x18x1 Accumulair Furnace Filter Carbon 18x18x1 Ultra Allergen Reduction 1500 Filter by 3M 18x18x1 (17.7 x 17.7) Filtrete Allergen Defense 1000 Filter by 3M

Efficiency

APR 2250
APR 2250
APR 1950
APR 1950
APR 1550
APR 1550
APR 650
APR 650
APR 450
APR 450
Carbon
Carbon
MPR 1500
MPR 1000

Equivalent

N/A
N/A
Merv 13
Merv 13
Merv 11
Merv 11
Merv 8
Merv 8
Merv 6
Merv 6
N/A
N/A
N/A
N/A

Performance

Best
Best
Best
Best
Better
Better
Good
Good
Basic
Basic
N/A
N/A
N/A
N/A

Actual Size

17.5x17.5x1
Actual Size
17.5x17.5x1
Actual Size
17.75x17.75x1
Actual Size
17.75x17.75x1
Actual Size
17.75x17.75x1
Actual Size
17.5x17.5x1
Actual Size
17.7x17.7x1
17.7x17.7x1

Brand

Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
Accumulair
3M Filtrete
3M Filtrete

Item #

FI18X18
FI18X18A
FD18X18
FD18X18A
FA18X18
FA18X18A
FB18X18
FB18X18A
FC18X18
FC18X18A
FO18X18X1
FO18X18X1A
MD18X18
MA18X18

Purchase

$15.99

Min Qty: 2

$17.99

Min Qty: 2

$13.99

Min Qty: 2

$15.99

Min Qty: 2

$7.99

Min Qty: 2

$10.99

Min Qty: 2

$6.99

Min Qty: 2

$8.99

Min Qty: 2

$5.99

Min Qty: 2

$7.99

Min Qty: 2

$13.99

Min Qty: 2

$14.99

Min Qty: 2

$17.99

Min Qty: 2

$15.99

Min Qty: 2

Product Page

More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »
More Info »

18x18x1

Air Filter

Efficiency: APR 2250
Equivalent: N/A
Performance: Best
Actual Size: 17.5x17.5x1
Brand: Accumulair
Item # FI18X18

$15.99

Min Qty: 2
Efficiency: APR 2250
Equivalent: N/A
Performance: Best
Actual Size: Actual Size
Brand: Accumulair
Item # FI18X18A

$17.99

Min Qty: 2
Efficiency: APR 1950
Equivalent: Merv 13
Performance: Best
Actual Size: 17.5x17.5x1
Brand: Accumulair
Item # FD18X18

$13.99

Min Qty: 2
Efficiency: APR 1950
Equivalent: Merv 13
Performance: Best
Actual Size: Actual Size
Brand: Accumulair
Item # FD18X18A

$15.99

Min Qty: 2
Efficiency: APR 1550
Equivalent: Merv 11
Performance: Better
Actual Size: 17.75x17.75x1
Brand: Accumulair
Item # FA18X18

$7.99

Min Qty: 2
Efficiency: APR 1550
Equivalent: Merv 11
Performance: Better
Actual Size: Actual Size
Brand: Accumulair
Item # FA18X18A

$10.99

Min Qty: 2
Efficiency: APR 650
Equivalent: Merv 8
Performance: Good
Actual Size: 17.75x17.75x1
Brand: Accumulair
Item # FB18X18

$6.99

Min Qty: 2
Efficiency: APR 650
Equivalent: Merv 8
Performance: Good
Actual Size: Actual Size
Brand: Accumulair
Item # FB18X18A

$8.99

Min Qty: 2
Efficiency: APR 450
Equivalent: Merv 6
Performance: Basic
Actual Size: 17.75x17.75x1
Brand: Accumulair
Item # FC18X18

$5.99

Min Qty: 2
Efficiency: APR 450
Equivalent: Merv 6
Performance: Basic
Actual Size: Actual Size
Brand: Accumulair
Item # FC18X18A

$7.99

Min Qty: 2
Efficiency: Carbon
Equivalent: N/A
Performance: N/A
Actual Size: 17.5x17.5x1
Brand: Accumulair
Item # FO18X18X1

$13.99

Min Qty: 2
Efficiency: Carbon
Equivalent: N/A
Performance: N/A
Actual Size: Actual Size
Brand: Accumulair
Item # FO18X18X1A

$14.99

Min Qty: 2
Efficiency: MPR 1500
Equivalent: N/A
Performance: N/A
Actual Size: 17.7x17.7x1
Brand: 3M Filtrete
Item # MD18X18

$17.99

Min Qty: 2
Efficiency: MPR 1000
Equivalent: N/A
Performance: N/A
Actual Size: 17.7x17.7x1
Brand: 3M Filtrete
Item # MA18X18

$15.99

Min Qty: 2

Newsletter Signup

Sign up to join our mailing list and be the first to hear about special pricing, new products, and tips to get the most out of your filters!

You can also sign up for our email reminders to change your filter here

No thanks, I'd rather not