I ended up having the shop paint a panel with both. One side 9900N and the other with 99n. Really couldn't tell the difference to tell you the truth. However when I took it outside, and looked the the reflection of the sky, I thought I could see that the sky was ever so slightly more blue in the 9900N. Our Dupont rep described the 9900N as being slightly more blue and a little less muddy than 99N.
The 99N is esentially only 815J black toner and nothing else.
The 9900N is their factory pack black, and they do not release a code for this.
I went with the 99N as they had already painted the doors and a few other pieces.
Bil
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