The 1 Hole strap hanger is the more "heavy duty" type of hanging system for frames.
These are designed to go on bigger more solid frames.

You can put cord across between the two hangers & then hang on the hook, or alternatively face them pointing upwards and hang the strap hanger directly on to hooks. (without the use of cord)

Specifications:
AMS brand, the best around!
Total length of hanger: 45mm
Width of hanger: 25mm
Screw length: 14mm

Quantity: 6 Strap hangers, 6 Screws