Kair System 100 Round to Rectangular Offset Adapter/Connector

Did the job

perfect fit for my air conditioner unit, good value

Does as required.

Kair plastic adaptor between 4” round and 4” x 2” rectangular-duct is a good durable product. The standard 4” round duct is a snug push-fit into one socket, and standard 4” x 2” rectangular duct fits into the other socket. The transition between round and rectangular is smooth for minimum flow resistance and the bottom edge is level to prevent pooling of condensation. I have a continuous slight downward slope on my extractor ducts in the direction of the airflow away from the fans, so they never pool. The rectangular has to squeeze through between wall-plate and underlining just before the eaves. see my pics Any slightly pressurised duct will always want to leak condensation. Additional duct tape will always be required. This is easily applied. This is ideal for use inside a building and protected from the UV of bright sunshine.

Perfect for what I needed. Allowed me to use the existing 100mm duct in the wall to connect to 205x60 rectangular channel, The transition is quite compact too about 60cm

Good

An accessory that is required for venting sub floors very happy how something so small is very vital to how ventilation should work effectively

Not a bad adaptor, used in dual pairs to cross-over-under a set of ducts that were in an awkward height in my MVHR setup, eliminating a low-spot in the ducting that could have been a problem later on. It also came in quite handy for passing a duct over a pair of wooden beams that I couldn't cut through for the 100mm round pipe because it was load-bearing. It fitted with a good inch to spare, which was good as it left room for insulation around the ductwork. The end result is a professional-looking rigid setup that should last many years to come, instead of resorting to flexible ducting which always looks like a messy afterthought. The only let down is there are a couple of internal seams which protrude, but a few seconds with some sandpaper easily flattened those down.

Muy buen material

Duttile e condirne alle esigenze

Tenia un tubo de ventilación sacado por la ventana y pillado con esta. Y se caía cada dos por tres y quedaba muy feo visto desde fuera. Con este adaptador lo pillas con la ventana y lo pegas con un poco de cinta americana y es mucho mas discreto y el tubo no se va a mover jamas.

un piccolo disegno con misure sarebbe stato perfetto

excelente