Sizes: 4, 6, 8-inch. We've gotten only positive feedback from our customers about Sunleave's WindTunnel Fans! The extremely quiet operation of these inline fans makes quite an impression. 

The durable plastic housing of the WindTunnel Fans helps minimize vibration and noise. Plus the plastic housing can stand up to the moist environments of your indoor gardening area!

Permanently sealed and lubricated ball bearings provide zero-resistance blade rotation for smooth, dependable operation. They've also got a Class B thermal protective auto reset.

WindTunnel Fans can be mounted in any position (mounting hardware included). Remember to match the diameter of your ducting with the flange size.

Sizes and stats:

WindTunnel 4: 4" Flange, 10" housing, 200 CFM, 40 Watts, 0.53 Amps
WindTunnel 6: 6" Flange, 11" housing, 409 CFM, 70 Watts, 1.0 Amps
WindTunnel 8: 8" Flange, 13.5" housing, 650 CFM, 120 Watts, 1.7 Amps
Larger versions have different housing. Find them here

In over a year of selling WindTunnel Fans (hundreds of them), we haven't had any returns or warranty issues whatsoever. These are powerful, quiet, and dependable fans.

ETL-listed WindTunnels are energy efficient and carry a five-year warranty! They're pre-wired and ready to plug in. 120V.

A portion of the proceeds from the sale of every WindTunnel goes to the Hydro For Hunger initiative to help eliminate world hunger.

More info (PDF format)