The Large Town Light Full Jamb 4 Season octagon window from JJJ Specialty Co. gives you the classic look of wood with the all-weather durability of a seamless polyurethane exterior. The exterior is prefinished in contemporary black with dual pane annealed clear insulated glass. It features a full 4-9/16" jamb for a ready fit into a standard 2x4 construction wall. The window includes a 9 light pine removable grille. The interior is unfinished pine ready to paint or stain to match any decor.