USG Sheetrock® and Beadex® Brand Paper-Faced Metal Corner Bead and Trim provide superior resistance to edge cracking and chipping for a look that stays beautiful despite the stresses of normal building movement and everyday wear and tear. Use for 90° outside corners. Suitable for use on any thickness of wallboard. 

A = 3/4"
B = 13/16"
C = 9/16"
D = 3/4"