bolted in place, next I will install the end dams to make the corners (pre-drilled for ease of installation.)
Temporary cardboard exterior sheathing shows in the pictures. Notice the gap between the cab and RV box is 1" wider at the top than the bottom (I aired up the system and with full bags, the gap remained constant.) The gasket will accommodate the variation (more cost effective than having a flared piece of trim manufactured) and allow the movement between the cab and RV box.
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