This Butt Style 3-1/2 inch (88.9 millimeter) x 3-1/2 inch (88.9 millimeter) Hinge with 1/4 inch (6.35 millimeter) radius corners, can be used on aluminum, steel or wooden frames. it is available in three finishes, polished brass, satin nickel and satin chrome.
1/4 inch (6.35 millimeter) Radius Corners