Originally Posted by misoonigiri
Noctua site puts D15S as 160mm as well 165mm on their site. You might want to drop them an email to ask.
The heatsink itself is 160mm but once you add the included NF-A15 it will go up to 165mm. You can actually install the fan a bit lower so you have a slightly lower overall profile (I have a D15S installed on a TJ08-E with a height clearance of 163mm but it fits nicely)
You also can get rid of the A15 fan altogether and put 2 F12's (or any 120mm fan for that matter) and stay at the 160mm mark
I have it that way and there's no real noticeable difference vs a single A15. Of course, you add 2 $20-ish fans to the cost of the whole cooler so that's the drawback.