1. Insert the straight end of the latch between the knockouts
furthest from the corner.
2. Using a moderate amount of pressure, force the latch over
the third knockout.
3. The latch installation should now be complete. The latch
should now be “trapped” within the three (3) knockouts.
4. Repeat the latch installation with the remaining latches.
.
After the latches have been installed, the frame should be
congured like that shown in Figure 45.
5 Insert the rigid DH lter into the frame. While holding the
lter in the frame, grasp the loop on the end of the latch and
pull it until it stretches over the header and rests into the pre-
drilled hole in the header of the lter (see Figure 46). Repeat
this with the remaining latches.
6. The lter should now be securely installed into the frame.
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