Note: This tutorial contains affiliate links, but all opinions are 100% my own. Create a stylish way to store outdoor décor with this slatted deck box. While creating the louvered look may seem complicated, I’m here to tell you, it’s as simple as tilting the slats. Even better, assembly Set the miter saw to 30 degrees. Cut the three seat boards you marked in the last step to length with opposing angles on either end. Using each of the four seat boards as a guide, measure and cut five more boards at each size to make all the seat boards for the bench’s six sections. .