Removable shower shelf with brackets

Easily removable shower shelf optimised for A1 mini. The shelf is hanging on two brackets. Brackets are fixed to the wall by double sided tape. 
This model is inspired by the shelf in link below, but provides more space for bottles and has rim through the top side by the walls covering the brackets. Source model: https://makerworld.com/cs/models/1575968-removable-shower-shelf-with-brackets?from=search#profileId-1658069