Alton Evolution Octagonal 9x9 Instruction Manual page 32

Roof Vent Installation Diagram 74
Fitting the assembled autovent units is
easier if they have been kept cool so
they are in their closed position during
installation.
The top arm of the auto vents fixes to
the vent in the normal way using EV0328
19mm pan head screws, see diagram 75.
The bottom arm fixes to the underside
of the lantern top eaves rail (EV1098) us-
Dia. 75
ing EV0331 25mm pan head screws, do
this with the roof vent in the closed posi-
tion so that you get the bracket in the
correct position.
Ensure that the autovent mounts are
inline with each other so that the aut-
External
ovent does not twist on opening.
Diagram 75
Internal
EV0328
19mm
EV0331
25mm
10
32