21 x 21 x 1 basic filters in the the exact size of 21 x 21 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leading manufacturer in indoor air filtration to offer the largest
selection of high quality exact fit HVAC filters with up to a MERV 4 rating. This filter will be made to the exact dimensions of 21 x 21 x 1.
The low initial pressure drop and robust construction of this filter make it a solid choice to protect residential and light industrial equipment. It also helps keep heating and cooling coils clean, which lowers energy bills. Breathe easy knowing that these quality filters will help keep your indoor air pure.
- Media: Fiberglass
- Filter frame: 1-piece heavy chipboard
- Media support: No media retainer
- Low initial pressure drop
- Easy to install
- Lasts up to 30 Days (depends on use)
- Up to MERV 4
- UL Classified
- 12 pack (full case)
- Made to the exact size, no more confusion with filter sizes
- Manufactured in the USA
Manufacturing tolerances of plus 0, minus 1/8"" will be observed on overall width and length of filter. Picture is used as a reference, sizes will vary. Filters larger than 25x30x1 are considered a double filter where there is additional strength down the middle of the filter. If you have questions or concerns please contact us.
