WishIKnew

I just looked up a register boot. It looks like the way to go as it has a built in L and would convert the easiest. I think over time it could accumulate debris, but should not be near the mess that is taking place right now.

For my particular case that only has the square duct with a hole a the base side - do i cut the square base and then slide this boot on? Is there some trick to it?

porchtalk

Here's another approach. I don't like the dryer hose "trap" that's created by this configuration. Chances of cleaning it out on a regular basis is questionable (no offense) and it is a potential "lint collector fire hazard " let alone putting more stress on the dryer if it gets clogged. Why not run the hose directly into the closet and along the wall to the outside. Build an insulated cover over the hose to cut down on noise and to conceal it. It won't take up hardly any usable space in the closet, will be hidden, and you'll have a direct line to the outside. Connections can be tight and you don't have to work in the crawl space!

rowdy48

I think the register boot is the way to go. I do maintenance on several four plexs that have long pipe runs to the outside. I used a store bought vent brush on a 3/8 plumbing snake to clean them every six months. I just attach it with small hose clamps. It seems that tenants never empty their dryer vent traps