VEVOR BT-RTR31-AC1 Originalanleitung Seite 5

INSTALLATION GUIDE
Mechanical dimensions:
1.1.First, confirm the position of the fan installed on the indoor wall, and
open a 190mm diameter hole.
1.2.Insert the front panel into the hole, and make 4 marks on the wall
through the 4 screw holes of the front panel; drill a hole in the marked
position with an inner diameter of 6mm and a depth of 30mm; you can refer
to the size of the figure below for drilling, and the specific operation should
be carried out according to the actual object;
- 4 -