Stanley 821-439 4 Inch 1/4 Radius Door Hinges Antique Brass (Pack of 2) Full Mortise 4 inch by 4 inch overall For residential doors up to 1 3/4 inches thick. Non-rising removable hinge pin aides in the installation of the hinge 1/4 inch radius corners with 5 knuckle full mortise design Antique Brass Finish with matching screws