Window Opening Control Devices as required by ASTM F2090-17, the standard specification for window control devices with emergency (egress) release mechanisms. Product will limit the window opening to less than 4” and requires two actions to release the device allowing the window to open fully for egress purposes. Actions to release the device for egress purposes are to be performed without the use of keys, tools or special knowledge. WOCD will automatically re-latch when window is fully closed. -Prohibits the free passage of a 4 in. diameter rigid sphere -Dual action release mechanism that consists of two separate, distinct, and consecutive actions to release the mechanism -WOCD and egress release will not reduce the open area of the window unit beyond applicable code requirements -Avoids interference with operation or performance of a window -Fully concealed unit after installation and window in closed position -Built-in forgiveness with field adjustment feature and allowing for up to 1/8” sash sag -All adjustments can be done inside the home after window is installed -Pan head screw (SS) use for ease of handling -Concealed arm after released from track