For doors; this 2-sheet pack covers 4. 2 sq. ft. Eliminates low frequency noise problems; high performance adhesive maintains adhesion throughout temperature extremes Flexible – can be applied to irregular surfaces; use as a first layer for areas with contours and bends for vibration damping needs Easily trimmed to size with Boom Mat Blade Lock Knife (sold separately); user friendly peal and stick installation Multiple uses including automotive, commercial and industrial applications; durable weatherproof construction is also corrosion resistant