Step ladder ceiling mount hooks

Due to limited space in my shed I needed a way to hang my ladder on the bottom of a shelf. I could not find any solutions that fit what I needed, so I made my own. There is enough room to lift the ladder up, so you can slide it out of the hangers. 

Mounting

I used 4.5 x 40mm screws to mount the hooks. If you use a powertool to drive in the screws you will need an angled screw adapter, since there are no holes in the bottom to guide a screw trough and the space is to small for a drill/impact driver. 

Material

I made mine out of ABS, since I wanted them to be very durable, but I think PETG should also work.