clamping rigid ducting to dryer?

[jeh]

For new construction and remodels I insist on Dryerbox (https://dryerbox.com). This solves all of the problems with dryer venting including being able to push the dryer as close to against the wall as possible. In new construction you can make sure the studding is in the correct spot. For remodels you might have to shift the location of the dryer to make it work.

They also make 45 and 90 degree fittings that are zero run length penalties which you do have if you use standard 90 degree fittings.

 

[Packard]

I did have reason, several years ago, to use flexible dryer vent ducting for another application.

I had built a “cat cabinet”, a base cabinet that housed on the bottom, room for my cats’ litter boxes, and two drawers above the litter boxes, generous drawers that held the supply of cat food.  It had a smallish opening (about 6” x 9”) for the cat to access the litter boxes, and a large two door opening to access the litter boxes.

I put in a low capacity exhaust fan that was intended to cool electronics.  It was very quiet, had a 1 or 2 watt draw, and possibly 5 cubic feet per minute of exhaust.  It did not need much.  As long as there was a negative atmosphere in the cabinet any odors could not escape into the room. 

I used the dryer duct hose and hardware to vent the exhaust outdoors.  It worked very well.  And no lint to worry about.

Amusingly, I fed the cats on the cabinet top.  It was easier for me (less bending over) and harder for the cats.  They had no difficulty jumping up to the top (it was standard cabinet height), but they used a running jump and the top was smooth and slick and they would slide across the top.  If they miscalculated the stop they would jump off and try again.  I added a carpet welcome mat to the top and that ended the sliding issue.  It was probably more amusing to me than it was to the cats.