3/4 in. Paper-Faced Metal Bullnose Outside Corner Bead, 9 ft. Used in creating 135° outside offset corners on bay windows. Dimensions: A,B - 1 1/2 in., B - 3/4 in., 9 ft. long. Benefits: Strong impact resistance. Forms superior bond with drywall compound. Reduces cracking along edges. Sheetrock® Paper-Faced Metal Corner Bead Brochure