Zanussi ZR 170 UN Instruction Booklet page 8

If the base plate is between 100 and 135 mm high, cut
it as shown in Fig. 14 and mount as described above.
If the base plate is between 135 and 170 mm high, cut
it as shown in Fig. 12.
If the appliance has been fitted into a space 870 mm
high and the maximum height of the base plate is 150
mm, fit the front cover plate as described in Fig. 13.
If the base plate is between 150 and 185 mm high, cut
it as shown in Fig. 14.
If the base plate is between 185 and 220 mm high, cut
it as shown in Fig. 12.
820
870
D519
820
870
D520
Fig. 13
100
150
Fig. 14
100÷135
150÷185
19