Gridfinity tray for Ikea Samla

I love the gridfinity system started by Zack Freedman and the design idea of easy accessibility and of displaying the stuff that is stored, rather than store it away. With my Gridfinity Ikea Samla adapter (https://bit.ly/GridfinitySamlaAdapter11l) I added an easy way of transporting more than a few boxes which I felt was lacking. But when stacking several bins on top of each other it can be a bit tedious to access the lower bins in the Ikea Samla box. So I made a tray that can be placed on top of Gridfinity bins like normal bins and should be sturdy enough to lift it out easily. It is the same size as the baseplate on the bottom of the 11l Ikea Samla box (39x28x14 cm) with a 5x7 grid. And it only reduces the capacity of an 11l box by 1 3U high divider bin. So you can stack 4 3U high divider bins and the tray in an 11l Ikea Samla box. The handles are designed for optimal usage when stacking 2 3U high divider bins on the bottom and 2 3U high divider bins on the very top. Or you can just