These H & H-L Shutter Hinges are commonly used on Bi-Folding Shutters and Bahama Shutters. These are surface mount shutter hinges and intended for shutters that recess into the window opening when closed. A common association of hinge types to hinge names, another style of H hinge that you may be looking for are Lift-Off & Parliament Hinges which are mortise-type hinges.