220mm x 90mm Megaduct Flat Channel Ducting 1.5 Metre Length - White Plastic

My son's cooker hood currently vented out of a roof tile vent that was straight up from the extractor hood in his bungalow, so warm moist kitchen air into a cold attic created condensation inside the ducting, the colder the loft space was, to the extent that sometimes water was running backwards into the hood.My solution was to take the 150mm duct up at a slight angle from vertical to another right angle, then to a 150mm round to 220/90mm adaptor from round to rectangle, onto a similar sized flexible ducting, over the wall plate into the soffit void & out via a 150mm round vent grill, adding insulation to the ducting should hopefully cure the problem as most of the ducting run now runs downhill towards the vent.I got this with some other ventilation bits, handy to locate all in one order via Amazon, paid a fair price without any hassle of having to locate various different parts. The item is all as expected, fits well & finishes off the job nicely.