Hood came with everything possible for a quick install.  Assembly of angle brackets and hood about an hour.  Prepping opening and bracing another hour. (Electrical was already in place with an outlet in attic).  Hardest part getting my 12 year and 16 year old girls to help hoist into place.  It is now a focal point of our new kitchen, let alone how awesome the lights focus on the work station and the smoke from cooking gone with the blink of an eye.  You definitely know the fan is on but it works so efficiently you shut it off right after cooking.  Recommend for anyone who has never completely vented out to the outdoors and just used charcoal filters, this is like a new toy to my wife and I.