Mortise storm door assembly replacement

Hello I am Not having luck finding the replacement in the local stores, not sure of the brand, but the door thickness is 1 inch, the backspace is 5/16 the screws on the side (top one to the bottom one 7 inches apart and the mortise is 13 /16 wide, inside top to bottom are 7 1/4 inch apart. Outside body is 1 3/4 wide, inside is 1 inch. I am sure I am missing something I don't need a key for inside a turn knob is fine if possible. any help would be much appreciated.

Patrick