Recessed duct fans are sized to fit either a 4 x 10-in. or 4 x 12-in. floor duct. If you have either of these sizes, order the fan and install it in place of the register. Then plug it in and you ...

Tjernlund Products’ Duct Booster Fans are designed for easy installation within heating and cooling ducts to increase the flow of conditioned air to desired areas. The fans operate quietly and are ...

The AirFlow Breeze Ultra is a register vent booster fan with remote control. It is a quieter and more powerful version of the original AirFlow Breeze, says the company. By using a built-in temperature ...