Works for this specific make of the card. I know there are cards with wider gap between the SFP+ ports and those obviously won't work. If you know some way of describing the difference between these cards, please tell me and I'll add it in the name of this model.
This model has no ventilation slots, unlike the original metal brackets. Should be easy enough to add if required, ask me if you need such variant.
Since plastic is much less stiff than the metal bracket, I added some extra material on the side of the card in places it should not interfere, to give it a chance of not bending out of shape.
I personally printed this out of PLA, but depending on the temperature of the air inside the case, it might not be the best idea. Probably the safest bet is to print in ASA (or ABS if you're into that).
The author marked this model as their own original creation.