If you're looking for a Centauri Carbon dust cover, I think buying a full cover is one of the easiest options. It keeps dust, pet hair, and other junk from building up on your printer when you're not using it.
The Centauri Carbon is enclosed, but that doesn't mean it's completely sealed. Dust can still collect on the top, around the printer, and eventually work its way inside.
Centauri Carbon Dust Cover on Amazon
I found a Centauri Carbon dust cover on Amazon that's made to cover the entire printer when you're not using it.
Check out the Centauri Carbon Dust Cover on Amazon
This is especially useful if your printer sits in a garage, basement, workshop, or anywhere that tends to get dusty.
Do You Really Need a Dust Cover?
You definitely don't need one, but I think it's a cheap upgrade that makes sense.
3D printers have belts, rods, fans, electronics, and other moving parts that I'd rather not have covered in dust. Instead of cleaning the printer constantly, you can just throw the cover over it when you're done printing.
Just make sure you remove the dust cover before using the printer. You don't want to trap additional heat around the entire machine while it's running.
For the price, I think a Centauri Carbon dust cover is a simple accessory that's worth having, especially if your printer sometimes sits unused for a while.