The Kelley Entrematic Double Knockout Header allows for a door’s heavy-duty retractable plungers to release in both directions at the top of the door opening, preventing damage from impacts both inside and outside of the loading dock. Available on the WW, CW and TW Series Impactable Dock Doors.
DOUBLE KNOCKOUT HEADER DESIGN FEATURES
Allows the bottom panel to knock out in both directions at the top of the door opening
Only available with straight vertical track configuration.