Well, that's because he is referring to the Infinity model - the Vax Zero range were the first of the NLOS models in the mid 2000s. I remember wanting to buy one but most of them were quite heavy - and the bins weren't that fragile.
Vax/Dirt Devil U.S played the card of taking an existing model and just swapping the paper pleated cones over to produce a NLOS model. They also coloured the top of the bin - so those clear cyclones on the NV31 are unique to Infinity.