How is this pad attached? Does it stick to the sides and bottom of the bed or does it just sit in there? Does it cover the wheel wells? I visited the site and it doesn't tell you anything. Thanks

 

It comes as a flat, rectangular piece. You lay it in and cut 2 lines on each side for the wheel wells. It doesn't cover the entire wheel well. It attaches with a couple of adhesive strips, but I added a few pieces of duct tape. Clean the bed first. The liner will still rub above it and at the front bedliner lip. At these places I added some weatherstrip. Personally, I believe the whole thing could be done more thoroughly with a similar product that they sell at home improvement centers for wood flooring underlay. This product can be custom fit over the top lip, completely covering the wheel well, and up the bed sides.

 

Thanks Max, I will look into the wood flooring underlay. It does sound like a better solution.

 

You're Welcome !! Good luck on the install; it makes a huge difference in vibration and sound.