This is a very sturdy bed table 20 cm deep 15 cm wide and 15 cm high for my daughters loft bed. It fits a 20 mm side board. 

The table was designed for a glass of water and to fit the Yuki Air Cooler.

[https://www.printables.com/model/217636-yuki-air-cooler](https://www.printables.com/model/217636-yuki-air-cooler)

The table has a small ridge to catch water if spilled.  

I printed in PETG with 3 perimeters and 24 cubic infill. It is very stable and strong.