Fantech FG 6XL Inline 6" Centrifugal Duct Fan, Metal Housing, 483 CFM, 120V

Worked as expected

This barely moves any air.I have 5 feet of 4x8 rectangular duct followed by this fan, followed by a 7 inch exhaust. This fan is in between and it barely moves any air from my stove hood.

Fit perfectly

I'm using this fan as a duct booster. I added two vents to a sunroom at the far end of our house but was getting very little airflow from our furnace due to the distances involved (about 50 feet thru a 6" duct, about half of that being insulated flex duct). I wasn't sure how much boost power I needed so bought a somewhat overpowered fan and also a speed control to slow it down if necessary. At full power, this fan blows a LOT of air, so much so that it robs a noticeable portion of the air from the other vents in the house, so I do use the speed control to tame it down. It's a bit noisier than I had hoped. There's absolutely no noise coming out of the vents that it actually feeds through the flex duct, but the fan noise does travel back to the main duct and out the other vents in the house. I added a duct muffler, which helped somewhat, but the noise level is still noticeably higher than that produced by the furnace blower alone. The fan seems to be well built. The installation instructions are good. The terminal block made it very easy to connect to AC power. I do wish the parts of the fan that mates with the ducts were a bit wider - there's not a lot of material there to work with. Regarding the speed controller, I actually bought two speed controllers along with a pressure switch. When the furnace blower is off, the pressure switch powers the fan with a controller set to a very low speed, which constantly gives the sunroom a bit of needed air circulation. When the furnace blower kicks on, the pressure switch switches to the other controller which is set at a higher speed and provides plenty of warm/cool air to the room.

Excellent product. Moves a LOT of air.

I've used several brands of inline fans now, and frankly this one is the least impressive. It's supposed to be a high static pressure model, but I feel it actually doesn't have the torque to deal with longer duct lengths. I was also not impressed with it's attached electrical box and mounting hardware.I used it in a kitchen exhaust application with with three elbows and a 25ft run and it barely blows out any air. I've used other 4-in Vortex fan models for longer lengths with more turns that could blow exhaust air up four stories to the roof. This Fantec fan just isn't strong enough.

I bought the FGXL6 as a booster fan. My family room is services by a 6" flex duct that, due to the design of the house, is extremely long. The total run is approximately 40 foot. Running a more direct duct would have been cost prohibitive. So, I decided to investigate booster fans. Do not confuse this fan with the axial fans that you can buy from the big box stores for 25-35 dollars. Those fans will not work well under the static pressures encounter in a duct. As an experiment, I connected one of those axial fans and could not feel a difference.The FGXL6 is completely different. It is designed to operate well under static pressure. When I connected this fan, the difference was better than I had hoped. My family room is north facing, at the end of the house, and on a slab. With the original HVAC system in the winter, the room was 6 - 10 degrees colder than the rest of the house, depending on the outside temperature. With the FGXL6 running, the family room is now only about 2 degress colder than the house setpoint. Right now, I have the fan on a manual switch, which is not ideal as the fan runs even when the HVAC is in between cycles. So, when the HVAC system is not heating, this fan is drawing in the cold air that is in the duct. My next step is to install a relay that will operate the fan only when the HVAC is running. I am hoping that this will allow the family room to remain at the house setpoint. Additionally, I am going to replace the switch with a rheostat, so that I can tailor the amount of air the fan moves.As an update to my original review, I added a relay to control the fan via the main HVAC system. Now the family room stays within a degree or two of the rest of the house. I am very happy with the result. Still have not added the rheostat, and with the results I have now, I am not sure that I will.