Bath / shower tray for showers with handicap grab bars.

I am on work travel for four months and my work put me up in an apartment that is handicap accessible. I have have lots of grab bars but no shelves to put bath / shower items on.

I drew up a shelf that could slide over the grab bar, where the inside is sloped to drain water but the shelf surface is flat to hold soap and bottles.

I would recommend printing BathTrayShelf.stl at 99% of full size to get it to fit into the body better. I printed it at 100% and with the leftover support mat