are designed to operate in most every type of
installation. Available in 1 in., 2 in., and 4 in.
nominal thickness, these filters have an average
atmospheric dust spot efficiency range of
25-30% per ASHRAE Standard 52.1 test
methods. Pre Pleat 40 filters offer greater
efficiency and service life than disposable filters,
pad and frame systems, or metal washable filters.
The overall design of this product makes these
filters the accepted choice in applications
requiring high performance and extended
service.
These filters are suitable for variable air
volume systems. Operating face velocity
ranges are from 0 to 500 fpm for 1 in. and 2 in.
filters, and from 0 to 625 fpm for 4 in. filters.
Two styles are available: Standard capacity
with 11 pleats per lineal foot and high capacity
with 15 pleats per lineal foot.
