Field Proven Solution!

When first installed, a new filter is less than 100% efficient until it builds up a filtering shield known as the PRE-COAT. Most of the contaminants that pass through an air filter do so during the early part of the filter's life - when filter efficiency is at its lowest.  Only after 5% - 20% of a filter's life passes does the filter develop the PRE-COAT. The pre-coat is formed when microscopic particles build up on the media surface - once formed the filter is capable of filtering targeted contaminants at 100% efficiency.