AAF International PRU - Manual (Page 14)

14
Repeat the process of after-filter installation until all tracks are filled
with after-filters.
3.9 High Efficiency Final Filter Installation: A high efficiency final
filter bank ensures that the filtered air meets the highest levels of
particulate cleanliness. Install the final filter as shown here. The
standard RU is designed to accept a 6"-deep, single header final filter
only. For best results, AAF recommends the use of one of its line of
single header M-Pak high efficiency filters. The tracks are spaced and
sized to accept 24" x 24" x 6" and/or 24" x 12" x 6" nominal ASHRAE
style filters.
Step 1: Insert the high efficiency M-Pak filter into the track.
Step 2: The installed high efficiency M-Pak filter.
Repeat the process of high efficiency filter installation until all tracks
are filled with high efficiency filters.
3.10 Latch RU Doors: Now close and latch the RU doors as shown.