Here is a pic after apply 2- part epoxy inside and out. After epoxy set, I primed the outside of the box with 3 coats of Aluthane (aluminum impregnated urethane). Bonding and leveling qualities are fantastic. Aluthane is waterproof and UV resistant. Trying to decide if I will leave it as is or top coat it with a urethane paint and clear coat.

Sub Box Primed.jpg