Review on UL Certified 120V Unheated Awoco 48 Super Power 2 Speeds 1650CFM Commercial Indoor Air Curtain With Free Door Switch by Jonathan King

The unit was well packaged, arrived very quickly and was easy to install. It seems to make a difference in keeping most of the room warmer except for the area right across from it - which seems to get a draft of cold air several seconds after the "whoosh" of air stops, and that was the area we were largely concerned about. We don't think it's a reflection on the effectiveness of the unit but we think it's just because it's a smaller space - and with the problem of having a cold spot directly across from the door - perhaps the unit is actually a bit too powerful for the space. We're keeping it because we believe it will help a great deal keeping the heat and bugs out in the summer (our office is on a farm). Just a heads-up if you have a smaller or narrow space, this might not be the perfect solution if you're trying to keep cold out directly across from the door, although it will help with the rest of the room.