D3 4-inch Stone Wall with Door These parts will make the removable door. Glue the front and back of the door together. Insert the door into the slot in the door base. Glue the knocker ring to both sides of the door as shown above. Glue handle into the slots on front and back as shown above. The door is complete. Insert center into the base plate. Glue wide corner strips (they will be symmetrical) into the outer 4 slots. Glue the narrow asymmetrical corners into the 4 slot closer to the middle of the base plate. Glue teh top plate onto the top of the vertical parts. Glue archways onto the front and back of the wall.