2.1.1 Attaching the PVC flap
2.1.2 Attaching the flange and the 90° elbow joints
Prepare all the parts
needed: The channel, the
flange, the 0-ring, 4 M5 bolts
and nuts and the two elbow
joints. Place the 0-ring in the
recess in the flange and
fasten the flange to the
channel with the four bolts
and nuts shown, tighten the
nuts evenly. Before fitting
the 90° elbow joints to the
flange, lubricate them with
soap and/or water.