Like "TheJoyOfPrinting" my ender is on a shelf. However, either I am shorter or the shelf is higher. Therefore, I remixed it to double the top thickness. (The last picture shows the original spacer that I tried).
I have just added a BLtouch and the LCD fouls the hot end during the bed levelling. This could be sorted by resetting the right bed limit to change the levelling grid. Or I need to move the LCD forward. I will work on the later........
VERSION 3 27/07/19
I have added a 25mm 'square' back to it and it now clears the hot end (see photo). I also added a large shaft through the centre to reduce the filament used. The new spacer has two recessed holes for M4 bolts (I used 12mm) to screw into the 'other' two holes in the ally frame. I used the original bolts to mount through the plate into the spacer - the holes are sized for them to cut their own threads.
Two additional M4 x 12 bolts to fit spacer to frame.
Original bolts cut their own threads into the spacer.