Normal Air Filter Size

Measure the depth l x w x d.

Normal air filter size.

Standard paper air filters are not the most efficient in allowing air circulation. Your filter s mpr microparticle performance rating indicates its ability to capture tiny particles between 0 3 and 1 micron in size. This means that on 1 and 2 air filters the nominal size does not include the undercut and the actual size does include the undercut. This size will be displayed on the air filter.

This is completely normal and is the standard in air filter manufacturing. These air filters require cleaning every 50 000 miles. Nominal size is the printed labeled or rounded size of the filter. A high quality permanent washable air filter will outlast the life of your hvac system.

For pricing and availability. However you may be able to find the same stock size online by a different. Take a look at our dusteater and lifestyle series. All filters have an actual size and then a nominal size.

Slight variances in size may make a difference in certain situations. Standard paper air filters. Follow these 3 easy steps to accurately measure your air filter size. The actual size is the exact dimensions with no rounding.

Sometimes the size is written on the air filter in which case you can just head to the store or shop here and get the one that s the same size. You can easily wash and clean these air filters and reuse them over time without the need replace them. Which means they can ship out within 24 48 hours. Actual size is the true size of your filter.

Filtrete 20 in x 25 in x 1 in 1085 mpr allergen defense extra 2 pack electrostatic pleated air filter. Filtrete 20 in x 20 in x 1 in basic pleated 3 pack pleated air filter. A nominal size can have several different actual sizes. Whereas the nominal size is the rounded dimensions of the filter.

A 16 x 20 filter will have actual dimensions of 15 1 2 x 19 1 2. The most common furnace filter sizes are 10 x 20 14 x 20 16 x 24 18 x 30 12 x 12 14 x 24 16 x 25 20 x 20 12 x 20 14 x 25 18 x 18 20 x 24 12 x 24 14 x 30 18 x 20 20 x 25 12 x 30 15 x 20 18 x 24 20 x 30 12 x 36 16 x 20 18 x 25 4 x 24 and 25 x 25 and these sizes. You need to replace these air filters every 15 000 miles on your car. The higher the mpr the more microparticles such as pollen pet dander smoke bacteria and viruses your filter will capture from the air passing through it.

For instance you may find that the stock size at your local hardware store is just a bit too big to fit your housing slot. Measure the length. Most standard air filter sizes are kept in stock.