18x18x1 - 18"x18"x1' Disposable Replacement Furnace Filters, Genuine OEM Air Filter or Humidifier Replacement products, Original Engineered Manufacture

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F4L Private Label Air Filter 18"x18"x1" Pleated MERV 8 Air Filter

On SALE for $5.00

F4L Alternative MERV 8 Air Filter:

18" X 18" X 1" Actual size 17.5 X 17.5 X .75

18x18x1 3M Filtrete Dust Reduction Filter

18"x18"x1" 3M Filtrete Dust Reduction Filter

On SALE for $5.50

3M Filtrete 300 MPR Dust Reduction Filters:
Nominal Size: 18" x 18" x 1"
Actual Size: 17.7" x 17.7" x 0.8"
Minimum Order is Quantity of 6

F4L Private Label Air Filter 18"x18"x1" Pleated MERV 11 Air Filter

On SALE for $7.50

F4L Alternative MERV 11 Air Filter:

18" X 18" X 1" Actual size 17.5 X 17.5 X .75

F4L Private Label Air Filter 18"x18"x1" Pleated MERV 12 Air Filter

On SALE for $9.80

F4L Alternative MERV 12 Air Filter:

18" X 18" X 1" Actual size 17.5 X 17.5 X .75

18x18x1 3M Filtrete Dust and Pollen Allergen Reduction Filter

18"x18"x1" 3M Filtrete Dust and Pollen Allergen Reduction filter

On SALE for $9.99

3M Filtrete 600MPR Dust and Pollen Allergen Reduction Filters:

Nominal Size: 18" x 18" x 1"
Actual Size: 17.7" x 17.7" x 0.8"
Minimum Order is Quantity of 6

18x18x1 Pleated MERV 11 Air Filter with carbon

F4L Private Label Air Filter 18"x18"x1" Pleated CARBON MERV 11 Air Filter - with carbon odor block

On SALE for $10.99

F4L Alternative Carbon MERV 11 Air Filter:

18" X 18" X 1" Actual size 17.5 X 17.5 X .75

18x18x1 3M Filtrete Micro Allergen Reduction Filter

18"x18"x1" 3M Filtrete Micro Allergen Reduction filter

On SALE for $11.49

3M Filtrete 1000 MPR Micro Allergen Reduction Filters:

Nominal Size: 18" x 18" x 1"
Actual Size: 17.7" x 17.7" x 0.8"
Minimum Order is Quantity of 6

F4L Private Label Air Filter 18"x18"x1" Pleated MERV 13 Air Filter

On SALE for $12.25

F4L Alternative MERV 13 Air Filter:

18" X 18" X 1" Actual size 17.5 X 17.5 X .75

18x18x1 3M Filtrete Ultimate Allergen Reduction Filter

18"x18"x1" 3M Filtrete Ultimate Allergen Reduction filter

On SALE for $16.49

3M Filtrete 1900 MPR Ultimate Allergen Reduction Filters:
Nominal Size: 18" x 18" x 1"
Actual Size: 17.7" x 17.7" x 0.8"
Minimum Order is Quantity of 6

Need furnace filters or humidifier water pads.