Product review (5 stars): Does the job.
Works. Also bought the extensions because I needed them.
Our laundry is in the basement. About 3-4 turns to go through. Total of about 27-28 ft.
With the 12-Foot Extension Kit I got it almost outside from the interior.
Could not reach about 3ft to the end, but I did those from the outside.

I had a powerful leaf blower (gas) blowing from the inside and feeding the brush from the inside (there is a cap that has 2 holes, one for lint eater extensions and one for vacuum/blower).

Had two doors open and two fans in the doors to circulate the air from outside because of the gas blower which turned the fire alarms on. :)

The gas blower hose was not fitting the cap properly, but some duct tape solved the problem.

Read the manual about using duct tape on the connections, and rotating direction.