For the best carpet fit and excellent all weather insulation, we recommend our undercarpet insulation padding. This can also be used in Other areas of your vehicle for insulation purposes. Cut to fit your particular application. Part #hipa100 is to be used with our undercarpet insulation padding. Bonds to carpet, hood pad, headlining, metal and plastic, our aluminum foil tape is highly resistant to weathering and extreme temperature. Provides a tight seal against air and moisture transmission when applied to seams and Other openings. To be used with our insulation padding for seams. This insulation pad measures 4' x 6' . Can be used under carpet, headliner under hood, behingd all interior panels or any Other area you desire to insulate.