From The Anvil 33158 Arrow Head Hinge 18' Wax

Description

Frame plate - 1" wide for modern door lining. The knuckle on these are smaller than any other hinge.
The fixing plate is narrow enough to enable it to be hung on a modern door lining and to cut the architraving over it.

Sold in pairs and supplied with necessary fixing screws.

Overall Size: 18" x 5" (457mm x 127mm)
Fixing Plate: 5" x 1" (127mm x 25mm)
Hinge Arm: 16 1/2" (425mm)

These 18" hinges are recommended on full size oak plate doors.