Product review (5 stars): Useful duct for working in tight spaces
This past weekend I replaced my 20 foot dryer vent, and also wanted to achieve a straighter shot from the dryer to the vent. See, our original dryer was not on a stand, so the hole through the drywall into our unfinished part of the basement was about 8 inches too low for the new dryer, so the rigid vent that starts at the dryer and then meets the flexible, ribbed duct had to do some twists and turns to meet the hole in the drywall.

I pulled out the dryer to give me space to work, attached the flexible, ribbed duct to the male end of this Deflecto duct with clamps and duct tape, stretched it straight a bit, then attached the female end to the dryer itself. The fact that once it's stretched, it can collapse again made this job easy.  That's because there was not enough room to make the attachment once the dryer was pushed back in place. So, with this semi-rigid Deflecto duct, I was able to make the connection when the dryer was pulled out, then I pushed the dryer straight back into place, collapsing the stretched duct while maintaining the tight connection to the dryer.

Replacing the 20 foot line and making the connection straight across with this semi-rigid duct has reduced my drying time by 10-12 minutes per load.