Excellent solution for dryer venting. Let me get my dryer four inches closer to the wall. Every inch helps! And it makes the job neater and easier, too. To make adjustment easier, squirt a little WD-40 into the swivel joint before you install. Also use aluminum tape for a tighter seal -- clamps alone aren't enough (though you need them too.)

It's a pretty tight space where our dryer sits and because of a too tight bend, the hose had greatly reduced in air flow. Anyone with knowledge of dryer function knows airflow is right at the top of the list. No air . . . no dry. lol The close elbow was just what we needed.

The 90 degree vent elbow did exactly what it was designed to do and definitely saved rear wall space especially since we were using the semi rigid vent tubing which is not that flexible but recommended for our new LG dryer. We paid three times the cost since I needed in a hurry for the same basic elbow so if you have time shop around and that was the only reason for the lower rating. Its basic sheet metal but does the job.

The perfect solution to getting the dryer as close to the wall as possible without crushing the flexible duct when the wall connection was offset a foot to the side from the dryer outlet. I bought two of these and placed one on the dryer and one on the wall outlet. Four worm drive 4.5" clamps were used. Heavy duty aluminum flex duct was placed between them. These elbows easily turn after the clamps are tightened. Each was pointed upwards at about a 45 degree angle and the duct installed in a loop, not straight between the two, because there was no room to reach the clamps from the sides of the dryer. We installed one elbow with flex duct on it to the wall outlet first, then next installed the other elbow onto the back of the dryer before we slid it into the closet. The "trick" was figuring out how to get the other end of the flex duct attached to the dryer elbow. Fortunately, we had a skinny workman who could literally climb over the back of the dryer after tightening the final clamp in order to get out of the tiny laundry closet. The outside of the wall elbow was only 5.5" from the wall after the installation, which allowed just enough space to get the clamp on. The back of the dryer was 18" from the wall until the final clamp was tightened, but the loop in the flex duct allowed us to push the dryer to 5;5" from the wall after the workman was out. Because these elbows are quite a bit stronger than using just flex duct, we are sure the tenant will not crush the dryer hose by attempting to push the dryer closer to the wall, which was our main concern with this installation. Using these smooth elbows gave minimal resistance to airflow, as observed by looking a the exhaust hood flap that was all the way open. An expensive solution to a simple problem, but one that will allow access to the back of the dryer for future maintenance, while assuring the duct does not get crushed..

These worked well for creating an unobstructed path, as before my semi rigid ducting had to snake around and lint would build up. With 2 of these and some non expanded semi rigid ducting, clothes dry nearly twice as fast.

These are a bit better than the super low profile elbows as they do not reduce pressure as much.. and better than the larger stove pipe elbows that take up a lot of room.

The connectors fasten easily with other ducting that has this type of fastener/snap connectors. It is not hard to find semi rigid tubing that has male and female connectors already. Using stuff without the ends works, but not as well, as the connection is not as secure, and both ends connecting to it have to be male. It is best to install duct work so that the air flow has low resistance. The female end goes over the male dryer exhaust, and again, each section continues this pattern to the wall, which should be male ducting going into a female exhaust vent at the wall. If it does not fit, you can take some pliers and bend the ribbing inward a bit to make it fit.

I had some issues with the elbow falling off the dryer side. Foil tape did not help since the dryer is tapered/ribbed male, and the clamped female elbow slowly slides down. A simple fix was to bend the dryer's male vent in 4 spots with pliers so that the female end of the elbow would stay on well once the tension ring was fastened. I then taped over the seam with aluminum tape. Be sure not to use screws, as they will catch lint.