Meets CARB (California Air Resources Board) regulation for low VOC content. MD tack strip holds the carpet in place along walls and doorways. Tack strip is a wood strip with angled tack points jutting up that grab the carpet's baking. Tack strip helps to insure a smoother, professional looking installation. 7/8" W. x 4' L. 100-pieces per case. 400 lineal ft. per case.