The set consists of 2 pieces of upper or lower threaded rods (upper or lower system depending on your choice), with system nut and the upper support or the lower plastic foot.
A white PVC hose is supplied that covers the thread.

Exhaust air system DF1 for very small standard double windows, 44 - 61 cm window height
The exhaust air hose is hung on the side with the pre-assembled adapter in the side panel.

Exhaust air system SDF1 for very small French double windows, 44 - 61 cm window height
The exhaust air hose is hung on the side with the pre-assembled adapter in the side panel.

Exhaust air system DF2 for very small standard double windows, 62 - 76 cm window height
The exhaust air hose is hung on the side with the pre-assembled adapter in the side panel.

Exhaust air system SDF2 for very small French double windows, 62-76 cm window height
The exhaust air hose is hung on the side with the pre-assembled adapter in the side panel.

Exhaust air system DF3 for very small standard double windows, 77 - 105 cm window height
The exhaust air hose is hung on the side with the pre-assembled adapter in the side panel.