Lack table door knob with inserted magnets 20x10x3

A quick 20x10x3 magnet remix of ccc888's LACK door knob with inserted magnets.

I ordered 20x10x2 magnets from Amazon but got something around 19.5x9.5x2.8 instead, so I tweaked the STL file a bit to make them fit. I used a drop of glue though since the magnets sometimes pop out a bit.