- All hinged screen doors require both the Upper and Lower leaf hinges to form one full hinge.
- The lower leaf hinge attaches to the door frame, while the upper leaf hinge attaches to the screen frame.
- The upper leaf and lower leaf, together, form one full hinge.
- For unit heights of 6'8" or 6'11", two full hinges are required.
- For unit height of 8'0", three full hinges are required.