Clamshell construction is designed to simplify installation and accommodate finished wall thicknesses from 8" to 12.5".
Wall openings thicker than 8.5" may require longer mounting hardware, and the standard clamshell trim may not fully cover the interior door frame opening.
For qualifying out-swing installations with wall thicknesses from 8.6" to 12.5", an optional Concealment Panel Kit may be recommended to provide a more finished interior appearance.
After placing your order, a representative will contact you to confirm wall thickness, door handing, installation requirements, and any applicable upgrade options before finalizing your vault door configuration.
View Installation Guide & Rough Opening Requirements