Product review (4 stars): Great Product
This is a very well made item. The sheet metal and fabrication is much, much better than the ones I looked at in the Big Chain Home Improvement stores.

It brags about 3" clearance, but remember, you have to be able to attach the dryer and vent. Unless you are very dexterous or have a unique attachment arrangement, you'll be lucky to be able to reach behind and secure this duct with only 3" clearance. This duct is fairly inflexible too, so it requires vent attachments that are very close to perpendicular to the wall to be able to attach properly.

Great product, well made, performs as intended at a reasonable price.