This hinge is completely concealed when the door is closed. Available in 2 weight rated models to self-close doors under 132 lbs and 176 lbs. Weight rating is per 2 hinges. Closing strength is adjustable. Crafted in 304 grade Stainless Steel. Adjustable in 3 dimensions after installation. Hinge opens a maximum of 180 degrees. Can work on wood, steel, and aluminum doors and frames. Also known as a 3D hinge. Adjustable for height, compression to frame, and side to plumb the door. Hold Open & Self Closing Hinges can work together on the same door. Finger protection due to a small gap between door and frame. Hinges are sold individually. Minimum door thickness is 1-3/4". Length: 7" Door Side Width: 15/16" Frame Side Width: 1-1/16" Optional Accessories (found under Related Products): Router Templates Milling Jig