AAF International SAH - Manual (Page 13)

3.8 After-filter Installation: It is recommended that a temporary
after-filter be installed in the system to collect an initial plume of dust
that might be blown from the gas-phase chemical filters. If after-filters
have not been provided elsewhere in the system following the gas-phase
filters they should be included in the Side Access Housing. The
installation of the after-filters is exactly the same process as described
for the prefilters in 3.6. See below:
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Step 1: Insert the after-filter into the track.
Step 2: The installed after-filter.
Step 4: Maintaining a steady and even force on the side of the cassette push it into the
housing to engage the notches on the outer side of the half-cassette and continue to
insert the half-cassette until it is fully installed.
Repeat the process of gas-phase cassette installation and sealing
until all SAH modules are filled with sealed cassettes as shown below.
Repeat the process of after-filter installation until all tracks are filled
with after-filters.
Detail 2 - Step 3
Cassette locator bar
Gaskets
Gaskets