Drawer to help keep you ender 3 organised. It can fit 12 gridfinity cubes in a 6 x 2 configuration and 2 high, it also has a pocket for the allen keys and spanners that come with your ender.

you will also need 1x 8mm M3 screw and T-nut. There are holes for 2 more screws if you need them.

To fit: 

Remove the LCD bracket and Y-axis belt tensioner. Unplug the LCD cable from the back of the LCD.

There is a groove for the LCD's ribbon cable to follow, use double sided tape to hold cable in place, folding the cable to fit round the 90 degree bend. 

If you need it fit a m3 x 8mm countersunk screw to the back with a T-nut. 

Slide the housing in to the channel behind the LCD bracket and install a M3 X 8mm screw and T-nut in to the side where the Y-axis 20x40 extrusion meets.

Reinstall the belt tensioner and LCD bracket. The LCD bracket should hold the housing in place. 

If the bolts through the eccentric nuts catch on the  rear of the housing, invert the bolts so that the head of the bolt is down and the nuts are ontop.