I bought this item, 3x45 degree elbows, an adapter round to rectangular, an outside cowl, as well as the duct and 2x tubes of silicone. All the products worked perfectly for the job I was doing. My only problem was that the duct was to run on top of some wall cupboards which meant it was just in view. As the duct is grey and the fittings white, I did have to paint it, but not a real problem. The delivery arrived in perfect condition in 24 hours even though it could have been 2 to 4 days. I will recommend I-sells. Thank you Phil.