Engineered for Performance 

  • Tested to meet both ASTM F2006 & F2090
  • Flex-Fit Technology adjusts perfectly to extrusion thicknesses from .050" to .100"
  • When properly installed and engaged, prohibits the free passage of a 4.0-in diameter rigid sphere
  • No more than 15 lbf required to release mechanism
  • Once released, when the window sash is returned to a fully closed position, the WOCD mechanism shall automatically reset
  • Requires two WOCD for each window sash.