Vesta Air Deluxe L - What Do You Think?

Following on from our order for the Vesta Air Spinner, we have now received a further sample, this time of the Vesta Air Deluxe L. This is a static anti downdraught chimney cowl. It's black in colour, has an opening at the top for sweeping purposes, and comes complete with a set of very sturdy hook bolt fixings. It looks to us a little like the original box shaped Colt Cowl, and would work on the same principals. This one is not as high however, and in our opinion, not quite so unsightly.

We have put a video of this chimney cowl on YouTube here, and would welcome comments.