The difference is that the metal is semi rigid and less prone to crushing.
Semi rigid dryer vent duct.
Most dryer ducts are round and 4 inches in diameter.
Even some readily available semi rigid does not perform as well as dryerflex.
Flexible semi rigid transition duct can be used for electric or gas clothes dryer venting applications.
Builder s best 084131 saf t readi pipe flexible semi rigid aluminum dryer vent duct 2 clamps included 4 diameter x 8 length 3 8 out of 5 stars 43 20 55 20.
Item 1790033 model 1790033.
Dryer vent pipes properly called vent ducts come in a variety of materials.
Enjoy the 8 ft.
There was an article published in the ashi reporter in april 2005 saying that semi rigid metal was the only good substitute for smooth metal click here to see it.
Ul 2158a semi rigid duct is recommended by most clothes dryer manufacturers.
Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.
I ve recommended using semi rigid metal when necessary as a way of transitioning from the dryer to the duct.
Dryerflex has a smooth interior similar to semi rigid which allows the dryer to perform at peak efficiency.
Some are flexible and others are rigid.
3 25 4 0 4 0 airflow restriction wastes energy by increasing dryer times and it increases lint build up and the possibility of a dryer fire.
The flexible semi rigid is engineered from a triple lock design which prevents the duct from being crushed.
It also is a transition duct that must be used outside of wall assemblies.
Builder s best 084131 saf t readi pipe flexible semi rigid aluminum dryer vent duct 2 clamps included 4 diameter x 8 length 3 8 out of 5 stars 43 20 55 20.
Semi rigid aluminum is all that anyone recommends.
This type of dryer duct looks similar to an aluminum foil duct in that it is an accordion style flexible metal tube.