Dynamat 10612 12 sq. ft. Total: Superlite Tripak Kit, 3-Sheets (18" x 24" each) of Sound Dampening Material Dynamat Superlite Tripak Kit High-end sound dampening material Reduces noise caused by road noise, as well as vibrations Helps reduce speaker distortion on some vehicles and audio systems Total Surface Area Coverage: 12 sq. ft. | Each sheet is 18" x 24"