Ikea Utaker extensions

I needed to fit mattresses with a height of 20 cm in the Ikea Utaker beds. Normally it would only support heights up to 13 cm so I needed some extensions so I created those myself. These are 8 cm in length. I printed it in PETG with 3 walls and 30% rectilinear infill to make sure it can hold the upper bed. Fits perfectly and holds up until now.