This hatch is beautifully simple! It starts with a simple box and a rebated applied door stop.
The weather stripping is fitted into the rebate to create a nice seal. Next I’ll nail through the rebate and weather strip in one shot.
See! Nailing. Boo-yah!! Too easy.
Finally I glue a piece of 1/2″ plywood to 4″ of thermax foam (R6/inch, total R24!!). I secure the door tightly against the weather-stop using 2 eye hooks. The hatch will be painted and installed in a vertical wall to access a crawl space from below a porch. Enjoy! Abe.