I got my Ikea malm desk ( https://www.ikea.com/us/en/catalog/products/00214157/ ) a lot of years ago, when I was a small kid. It served me pretty well, and it has handled all my 'maker-practices' so far.
There was one problem though: I became bigger in the years I used the desk, and eventually became so big that it was not very nice anymore to work behind the ikea malm desk.
Off course, it is very important to have a good posture when sitting behind a desk. That's why I decided to lift my desk up a bit. That 'bit' became 85mm.
This 'desk elevator' or whatever I should call it became one of the handiest prints I have ever done on my 3d-printer, because the serve me every day since probably half a year already.
The parts are extremely strong and sturdy, and I think they'll last even longer then the time it takes for PLA to biodegrade.
When working on the desk, you don't even notice that the desk has 6 legs. In fact, the desk seems even more stable then it was without the legs, because Ikea desks aren't always as sturdy as you would hope for.
So there are 3 different parts.
1 fits in the left-front and right-back of the storage unit.
2 fits in the right-front and left-back of the storage unit
3 fits in the other, remaining side of the desk
You need to print 2 pieces of all of the different parts.
Although I summed up where the 3 different parts are for, it's actually speaks for itself, and as long as it fits, you got it right ;-)
I just want to say, that if you print this, there isn't a better way to show your appreciation for the model then posting a make of it ;-)
Because the heavy weight on your desk is devided over 6 blocks, you don't really need to print the blocks with high infill. I think 10% could be more than enough, but you can always go up a little higher if you want.
The layer hight matters even less. I printed them on 0.3mm with a .4mm nozzle to have them printed as quick as possible.