In step 3 we measured 8" on center to align the pilot holes and screws to the exit holes. In this step we’ll use that measurement again to line up the snaps on the flaps.
On the top edge of a flap, measure and mark two snaps per flap. Measurement is 8” on center from the flap to match the screws we added inside the cooler.
Attach the screws to the flap.
Repeat steps 1 & 2 for the other three (3) flaps.