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You are here: Home > Filters > 4" Filters > Custom 4" Sizes
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Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (Less than 149") exact size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (150-199") exact size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (200-249") exact size (6 Pack)
Our Price: $134.95
Our Price: $149.95
Our Price: $169.95
ZLPSP4A-6 ZLPSP4B-6 ZLPSP4C-6
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in  cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (Less than 149") exact size (2 - 6 Packs) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (Less than 149") Exact Size (6 Pack) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (150-199") Exact Size (6 Pack)
Our Price: $177.95
Our Price: $182.95
Our Price: $194.95
ZLPSP4A-12 M11SP4A-6 M11SP4B-6
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency. The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (250-299") exact size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (150-199") exact size (2 - 6 Packs) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (200-249") Exact Size (6 Pack)
Our Price: $194.95
Our Price: $199.95
Our Price: $215.95
ZLPSP4D-6 ZLPSP4B-12 M11SP4C-6
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in  cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (300-399") exact size (6 Pack) Micron GREEN Pleated Filter MERV 13 CUSTOM 4" (Less than 149") Exact Size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (200-249") exact size (2 - 6 Packs)
Our Price: $215.95
Our Price: $219.95
Our Price: $222.95
ZLPSP4E-6 M13SP4A-6 ZLPSP4C-12
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
MERV 13 Green Pleated Filter (MERV-13) CUSTOM 4" (Less than 149") Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (250-299") Exact Size (6 Pack) Micron GREEN Pleated Filter MERV 13 CUSTOM 4" (150-199") Exact Size (6 Pack) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (300-399") Exact Size (6 Pack)
Our Price: $229.95
Our Price: $229.95
Our Price: $239.95
M11SP4D-6 M13SP4B-6 M11SP4E-6
The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency. MERV 13 Green Pleated Filter (MERV-13) CUSTOM 4"  (150-199") The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (250-299") exact size (2 - 6 Packs) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (400-499") exact size (6 Pack) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (Less than 149") Exact Size (2 - 6 Packs)
Our Price: $241.95
Our Price: $242.95
Our Price: $244.95
ZLPSP4D-12 ZLPSP4F-6 M11SP4A-12
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Micron GREEN Pleated Filter MERV 13 CUSTOM 4" (200-249") Exact Size (6 Pack) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (400-499") Exact Size (6 Pack) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (150-199") Exact Size (2 - 6 Packs)
Our Price: $259.95
Our Price: $259.95
Our Price: $261.95
M13SP4C-6 M11SP4F-6 M11SP4B-12
MERV 13 Green Pleated Filter (MERV-13) CUSTOM 4"  (200-249") The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency. The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (500-599") exact size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (300-399") exact size (2 - 6 Packs) Micron GREEN Pleated Filter MERV 13 CUSTOM 4" (250-299") Exact Size (6 Pack)
Our Price: $264.95
Our Price: $268.95
Our Price: $269.95
ZLPSP4G-6 ZLPSP4E-12 M13SP4D-6
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
MERV 13 Green Pleated Filter (MERV-13) CUSTOM 4"  (250-299")
Micron GREEN Pleated Filter MERV 13 CUSTOM 4" (Less than 149") Exact Size (2 - 6 Packs) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (200-249") Exact Size (2 - 6 Packs) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (500-599") Exact Size (6 Pack)
Our Price: $279.95
Our Price: $279.95
Our Price: $279.95
M13SP4A-12 M11SP4C-12 M11SP4G-6
MERV 13 Green Pleated Filter (MERV-13) CUSTOM 4" (Less than 149") The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency. The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.
Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (600-699") exact size (6 Pack) Dust and Pollen Pleated Filter MERV 8 CUSTOM 4" (400-499") exact size (2 - 6 Packs) Micro Allergy Pleated Filter MERV 11 CUSTOM 4" (600-699") Exact Size (6 Pack)
Our Price: $289.95
Our Price: $292.95
Our Price: $298.95
ZLPSP4H-6 ZLPSP4F-12 M11SP4H-6
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 6 - and are not returnable due to the custom size request.
Custom Size Filters are Priced and based upon the size in square inches.  Below is a diagram on how to measure the size of the filter.  PLEASE NOTE: The size written on the side of the filter is not the exact size.  We need the EXACT SIZE to assure the filter will be made to your dimensions.
Filter Size Measurement
"A" = Width    "B" = Length
A x B = Filter in square inches
Above Example would be
16.25"  25" = 406.25" (Square Inches) - which is "F" Category.
 
If the size in square inches is:
  • Between 0 and 149 - the last digit should be "A" Category
  • Between 150 and 199 - the last digit should be "B" Category
  • Between 200 and 249 - the last digit should be "C" Category
  • Between 250 and 299 - the last digit should be "D" Category
  • Between 300 and 399 - the last digit should be "E" Category
  • Between 400 and 499 - the last digit should be "F" Category
  • Between 500 and 599 - the last digit should be "G" Category
  • Between 600 and 699 - the last digit should be "H" Category
  • Between 700 and 799 - the last digit should be "I" Category
  • Between 800 and 899 - the last digit should be "J" Category
  • Between 900 and 999 - the last digit should be "K" Category
Input EXACT Sizes in Boxes supplied.
1" and 2" filters are shipped in a carton of 12
4" filters are shipped in cartons of 6
Prices listed are for a carton of 12 - and are not returnable due to the custom size request.
The MERV-11 pleated air filters utilizes state-of-the-art, "shaped fiber" media technology, providing high performace filtration with low pressure drop for energy efficiency.