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Please note:
All filters are made with a 1-inch depth. Custom size filters are sold per case of 12 and are non-returnable.

The minimum filter size is 4" by 4". The maximum size is 25" by 35". Double filters can be made for sizes exceeding 25" X 35". Please email us for pricing.

We can custom make your filter to an 1/8". Please refer to the fraction conversion chart below when entering fractions:

1/8" = .125

1/4" = .25

3/8" = .375

1/2" = .50

5/8" = .625

3/4" = .75

7/8" = .875

For example, your custom made size is 16-1/2" x 28-3/4" x 1", you would enter: 16.50 in the "width" box and 28.75 in the "length" box.

Custom Made Filter Instructions:

1. Carefully measure the location where the filter will sit. Custom sizes are made exactly as measured plus or minus 1/8 inch.

2. Use the fraction conversion chart above to obtain the width and length measurements decimals.

3. Enter the width and length measurements in the calculator fields below and click the "calculate" button.

4. Click "clear" to correct an error or to enter new dimensions.

5. Click "next" to place your order.

Merv 4 Price Calculator:
Enter your Width:
Enter your Length:
   
Price:
 
Merv 8 Price Calculator:
Enter your Width:
Enter your Length:
   
Price: