18x18x1 Air Filters
18x18x1 3M Filtrete Dust and Pollen Allergen Reduction filter (Lt blue)
This 3M 18"x18"x1" Filtrete Dust and Pollen 1" filter, also known as 3M 18x18x1 - 3M 9837DC Filtrete..
$12.99
18x18x1 3M Filtrete Micro Allergen Reduction filter (red)
3M Micro Allergen 1" Filter PerformanceRated:1000 MPR*Life Expectancy: 1-3 months depending on Envir..
$16.50
18x18x1 3M Filtrete Ultimate Allergen Reduction filter (Navy)
This 3M 18"x18"x1" Filtrete High Performance Ultimate Allergen 1" filter, also known as 3M 18x18x1 -..
$19.49
Purolator 18x18x1 Pleated MERV 8 Air Filter
If you are looking for the perfect 18x18x1 MERV 8 air filter, look no further...
$8.00
Purolator 18x18x1 Pleated MERV 11 Air Filter
If you are looking for the perfect 18x18x1 MERV 11 air filter, look no further...
$11.35
Purolator 18x18x1 Pleated MERV 13 Air Filter
If you are looking for the perfect 18x18x1 MERV 13 air filter, look no further...
$15.40