This is a vented riser for the K1 Max, slim and fairly minimal, it has the benefit of being able to adjust the vents from the top without reaching around the back of the printer.
It consists of 4 corner pieces that fit together, with a vent slider that slots inside and moves left to right to block and open the vents. There is a 4mm lip that makes the assembly fit snugly where the K1 Max glass top panel would sit, so supports are required.
I printed the riser with fuzzy skin to improve the appearance, the tradeoff being the joint in the middle is more obvious.
The author marked this model as their own original creation.