Product review (5 stars): Great device
I ordered this dryer vent closure & it was shipped in a timely manner.  After reading the directions I decided to cut away the vinyl siding so the closure could fit flush against the insulation & plywood under the vinyl.  I covered the part that attaches to the house with silicone sealant to prevent any air leaks & put more sealant around the edges of the siding to prevent bugs & air from getting under the siding.

The only problem I had was the pipe through the wall was put in crooked by the builder.  Attaching this device to the house forced the pipe back inside the house.

I also bought the dryer hose quick connect kit.  I cut the inside of the pipe they way the instructions said then took a 2X6 block to drive the dryer pipe back into the dryer vent closure.

I finished installing the dryer quick connect kit & had the dryer running in about an hour, with the supervision AND help from my wife. LOL... It's working beautifully.