One leaf is able to move while the other leaf is fixed in place.
Standard door hinge layout.
1st hinge 2nd hinge 3rd hinge lock 1 st hinge 2 nd hinge 3 rd hinge lock 1 hinge 2 hinge 3 hinge 4th hinge lock amweld 7 3 8 37 5 16 67 1 4 39 9 16 7 3 8 39 5 16 71 1 4 43 9 16 7 3 8 32 11 16 58 83 5 16 55 9 16.
Then these leaves are attached to a curled barrel which gives the door the ability to open.
From under head cl 9 3 4 top of door 9 5 8 from bottom of frame cl 10 3 8 bottom of door 9 5 8 due to the the fractional calculations the bottom hinge cl may vary plus or minus 1 64 center two hinges are equally spaced between top and bottom.
However manufacturers do periodically revise their hinge and strike spacing therefore the sdi strongly recommends that individual manufacturers be contacted to verify dimensions.
One of the most common options for an exterior door hinge is called the butt hinge.
Dimensions listed are valid at time of publication.