The challenge is to cut a hole an 4 inch hole without dama.
Installing dryer vent through vinyl siding.
The first is to install a vinyl surface mounting block shown here that fits over the existing siding.
Cut a hole in the siding with a diameter of 4 25 inches by using a hole saw.
Transfer that measurement inside if necessary to mark the new dryer vent center.
If you are installing a dryer vent through a finished wall.
There are two good ways to install dryer vents through vinyl siding.
Use wood screws to attach the hood to the siding.
Cellwood white hooded dryer vent dryerhd04h at the home depot to use the one you already purchased you would want to buy a 2 piece vinyl mounting block.
You may need to scribe and trim the edges to precisely fit your siding profile.
If the hole is a little high or low measure the distance from the pilot hole to the center of the vent cap duct.
The best scenario would have been to buy a dryer vent that is made to work with vinyl siding like this one.
How to mount a vent cap on vinyl siding.
Avoid using metal screws on the vent since these screws will catch lint.
Getting the correct type of duct for you home and proper installation will ensure that things like lint fires or carbon monoxide build up will not occur.