Camco's 14-Inch x 14-Inch Universal Roof Air Conditioner Gasket Kit allows you to install a RV roof AC unit with confidence. It fits most RV roof AC units and provides a waterproof compression seal that conforms to seams, bumps and irregularities. The kit includes: (1) self-adhesive picture frame gasket and (2) self-adhesive foam leveling pads for different size AC units. The foam leveling pads measure 7/8-inch x 1-7/16-inches x 18-inches and 5/16-inch x 1-7/16-inches x 18-inches; the picture frame gasket has inside dimensions of 14-inches x 14-inches.