Self-adhesive, fiberglass pro mat tape for seaming cement boards in wet areas such as baths, showers, and laundry rooms. Easy-to-use; press into place. Cover surface with ready-mixed joint compound and finish to suit. Also superior in standard drywall applications using pre-mixed compounds. Alkali-resistant for long life. Heavier fiberglass yarn for added strength. Gray. 2" W. x 150' L.