I bought them for the original SUB 8003-AS, but it's the same measurements as the mark II version. I chose these over the RCF covers because I don't like the way they are designed - you would have to turn the sub on its face to remove the cover and I don't want to deploy the speakers indoors with the covers on.
Pros:
Well made, waterproof
Cheap
Cons:
They are a bit of a tight fit, but will probably stretch in time
No padding, so not the most protective of covers
Handle holes could be a bit bigger