![Kelley Logo](https://www.nwhs.com/wp-content/uploads/kelley-logo.png)
Kelley DSA Seal
The patented Kelley DSA foam dock seal with adjustable head pad offers excellent sealing on a full range of trailer heights. Its design features a manually adjustable head pad, which allows you to position the head pad on a 48″ vertical track. A standard 18″-high foam head pad is mounted on a heavy-gauge steel pan.