Strait-Flex® from ClarkDietrich
Strait-Flex® Outside 90 4 inx8' Corner
Item Number: OS4008
Strait-Flex® Outside 90 4 inx8' Corner
For 90° outside corners. OS-400 is designed to span large gaps in drywall and straighten framing irregularities on outside corners. Create a perfect finish with less joint compound and less effort due to the diamond-embossed paper edging, which allows for easier feathering and an even lay-down of the paper edge.


  • 4” paper-faced composite outside corner bead
  • Smooth nose provides clean, square, low-profile/low-fill corners and resists damage
  • Ideal for double 5/8” drywall applications
  • Paper will not fuzz-up during finish sanding
  • 8-ft stick