Subtle or bold, classic or contemporary, your siding choice is the first step in creating the perfect look for your home’s exterior. With Ply Gem’s PreView Siding Sample Program, see a 24 in. sample of the exact color and profile you’re considering. Ply Gem Progressions siding offers 0.042 in. thickness, 1/2 in. profile height and full-sized top lock and return leg for a secure installation.