Grundfos Unolift Series Installation And Operating Instructions Manual page 7

3.4.2 Duolift system dimensions
3 in.
A B
[in]
36 5 36
Fig. 3 Dimensional sketch, Duolift
Lid for Duolift
2 in. discharge
flange
2 1/2 in. RP2
cord grommet
34 in.
2 in. vent flange
Fig. 4 Dimensional sketch, Duolift lid
3 1/2 in.
28 in.
C D
30 10
(6) 9/16 in. holes
8 in.
8 in.
5 in. hole for
4 in. Adaptaflex
10 in. inspection plate
4 in.
4 in.
14 in. opening with
a 16 in. cover plate
Fiberglass treadplate
7