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Basic
Filtration -
$39.19/Box of 12
($3.27/ea) -
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- Basic Air Filter
- Glasfloss GDS Series
- 18x20x1 (17-5/8 x 19-5/8 x 3/4)
- Basic Equipment Protection
- 30 Day Filter
- (More Information)
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MERV 10
Filtration -
$66.00/Box of 12
($5.50/ea) -
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- MERV 10 Air Filter
- Glasfloss ZL Series
- 18x20x1 (17-1/2 x 19-1/2 x 7/8)
- Standard Allergen Removal
- Up to 90 Day Filter
- (More Information)
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MERV 11
Filtration -
$96.86/Box of 12
($8.07/ea) -
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- MERV 11 Air Filter
- Glasfloss MR-11 Series
- 18x20x1 (17-1/2 x 19-1/2 x 7/8)
- Superior Allergen Removal
- Up to 90 Day Filter
- (More Information)
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MERV 13
Filtration -
$168.75/Box of 12
($14.06/ea) -
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- MERV 13 Air Filter
- Glasfloss MR-13 Series
- 18x20x1 (17-1/2 x 19-1/2 x 7/8)
- Best Allergen Removal
- Up to 90 Day Filter
- (More Information)
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Choose from our selection of 18x20x1 air filters below. To compare filters to one another, simply check the compare box by the filters you would like to compare, then click "Compare Selected".
18x20x1 Air Filters
