No. The 450mm measurement refers to the length of the hinge strap across the face of the gate, not the width of the gate that the hinge can be used on.
No. On our Perry 450mm Medium Tee Hinges, the 450mm measurement describes the length of the horizontal strap that fixes across the face of the gate.
The other part of the tee hinge is the vertical plate that fixes to the gate post or frame and forms the pivot. The hinges are supplied as a pair.
This is why a tee hinge should not be selected simply by matching its stated length to the gate width. A 900mm-wide garden gate does not require a 900mm hinge, and a 450mm hinge is not restricted to a 450mm-wide gate. The product guidance instead identifies gate weight, construction and condition as relevant to hinge selection.
These medium tee hinges have a bright zinc plated finish, abbreviated to BZP. Related hinges, latches and bolts can be compared under garden gate furniture.