Seen on older Centurion doors the No.3 hinge is used to house the roller and join the third panel from the bottom to the fourth panel.
Dimensions: 150mm long x 62mm wide
It is important to select the correct number hinge as although they look the same at first glance the hole centers for the roller shaft will change by 5-6mm between each panel so fitting the incorrect hinge will cause your door to bind or scrape along the face.
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