Sent me a hood with a rear vent, which turns out to have unwanted features NOT mentioned in the listing (rear vent is rectangular, not round! and also has an opening for a top vent) I contacted them to say the item description did NOT mention the rear vent was rectangular therefore I wanted an adaptor and also I needed to cap off the top vent, they advised they do not sell parts to resolve these unwanted features,so I would have to pay my own delivery costs to send it back to them. The item description on their website was incorrect or else i would not have bought this product.