MARK-20-V Replacement Pre-Filters
The pre-filter is the first stage in your MARK-20V Smoke Eater and should be changed at least once per month. It removes larger particles such as lint, hair, dust and pollen. The pre-filter is important because not only does it remove the larger particles, it also helps prolong the life of the HEPA filter in the system. Essentially, the pre-filter is the first line of defense in maintaining your system; therefore promoting better indoor air quality.
Pre-filters cannot be washed and must be changed monthly.