Product review (3 stars): You might want to order 'C-clips' and save your time and fingers
Our new dryer could not be pushed against the back wall with the rigid exhaust pipe,so the installers suggested I get a flexible duct. Well, it wasn't that easy to fit around the dryer's exhaust pipe or the pipe to the outdoors, but after about 30 minutes, this was accomplished. However, the provided clips were nearly impossible to secure around the duct. They kept snapping out of my fingers. Ultimately, a trip to the local hardware store for C-clips (I think that's what they are called) solved this problem. They went on quickly and hold the duct safely around the vents. The dryer is now pushed back against the wall and working as it should.