Standard DEFS base support starter strip or as a perimeter casing bead. Two rows of large perforations allow the base coat mixture to easily flow through and bond to the substrate. Weep holes provide drainage away from the substrate. 

• Finish Thickness: 1/16"
• Board Thickness (A): 1/2"
• Back Flange (B): 1-3/4"
• Perforated Flange (C): 5/8"