A thicker than OEM, made in the USA with better quality rubber flat seal for ’68 – ’92 Westfalia or Riveria (with front fiberglass luggage rack) Pop Top Campers
One side has been notched for overlaying the bottom trim / seals. Temp slip the fiberglass edge into the first groove of the flat rubber seal and temp install it to the other side.
Use a pair of gardening shears to cut to proper length (3x different lengths and these are cut over size for you to trim to fit..) and then copy the other side of notching for over laying the bottom trim / seals.
Get some black weather strip adhesive, clean the Fiberglass edge, apply a little glue along the leading edge and slip on the flat rubber seal. Drop top all the way down, reposition the seal if needed and let the glue dry.