The dryer has a duct like this: There is dryer hose at the dryer that connects to 4" duct, which goes vertically down for about, umm 3-4 feet, then a 90, then a run of about 20 feet. I just cleaned the ducts of quite a bit of lint. I'm wondering if something could be put at the 90 ell, such as a box, that would be below the horizontal run where the lint could collect and be taken out rather than collecting in the long horizontal run.
| |-vert duct | | _________________________________________________| |__ _________________________________________________ |