Mandik FDMC Manual page 21

Damper must be firmly connected with extension
piece by screws or rivets.
21
Position:
1 Fire damper
2 Damping pad
3 Extension piece
4 Threaded rod
5
Mounting rail
6 Nut
7 Washer
8 Screw connection
9 Mounting profile
10 Bolt
11 Screw or rivet