Every lock, keypad, and handle on a cellar door cuts through the seal line. What each hardware penetration means for the gasket, and how to specify it right.
One face of a wooden cellar door sits at cellar humidity, the other tracks the house. That difference bows the panel; core and finish scope limit how far.
A cellar door's swing needs clear floor inside the cellar and clear hallway outside it. See how clearance, opening width, and wall placement fit together.