US Patent 7861473 Low-profile screen framing system

A system for framing a porch using concealed fasteners and concealed or partially-concealed framing elements on support posts. The framing elements have a small cross section, generally shaped like the letter C with a slot on one side and a spline groove in one of the opposing corners. The framing elements are attached to a support post by screwing plural, spaced-apart buttons into the posts and then snapping the button heads into the slot of the framing elements. The framing elements may be applied to the surface of the posts or, because of their small size, may be put into grooves formed in the sides or corners of the posts and concealed on one or more sides by trim boards.