I.ve had mine in my room for about 8 years now (my windows are also too small for a window unit). It has a 6" duct but has an attachment that goes on the duct that reduces it to 2'x8". I cut a 4" board the width of my window and traced and cut out the hole for it to fit through, works great. It somehow (magic maybe?

) vents the moisture out through the duct and does not need a drain tube and has no pan to empty. As stated it is a bit noisy but no more so than a window unit. It is a DeLonghi The duct can be cumbersome and take up quite a bit of room, I have mine on a stand directly in front of the window so that I don't have the guct going from it on the floor to the window. Hope this helps!