The 8827-F and WS98/99 Windstorm Device latches that mount to the top and bottom of the door look similar but are not the same parts.
8827-F Top Latch Assembly Less Cover - 050462
8827-F Bottom Latch Assembly Less Cover - 050463
WS98/9927/57 Top Latch Assembly (less cover) - 048003
WS98/9927/57 Bottom Latch Assembly (less cover) - 048002
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