• CERTIFIED AND TESTED REFURBISHED VERSION
• Refurbished version might have minor cosmetic imperfections. Might come in different packaging. Outside of minor cosmetic imperfections and packaging, these fans work as brand new.

• ENERGY SAVINGS: Built with a cutting edge brushless EC motor and dual jet type impeller, our new 4" ECMF series fans deliver 141 Cubic Feet per Minute (CFM) of Airflow using only 21 Watts. 

• QUIET & FULLY ADJUSTABLE: Choose from 2 included speed controllers. Analog granular type or digital with 8-speed presets and numeric screen. Adjust the motor speed from 0%-100% without creating any additional hum or background noise. Wireless and programmable thermostat speed controller add-ons available. 

• PWM, 0-10V CONTROLLER SUPPORT: Our EC fans support external speed controllers with popular PWM and 0-10V signal types. The fan can be connected to an external controller using a 3.5mm TRRS wire supplied with the fan.

• COLD ROLLED STEEL HOUSING: Resists accidental damage, harsh elements and reduces maintenance in demanding applications such as ventilation of grow tents, gardens, farms, crawl spaces, attics, etc.

• COMPACT: Only 6.37" (L) x 6.77" (W) x 5.8" (H). Perfect for applications with minimal clearance available. Mounting bracket, screws, and anchors included.

• ETL LISTED: ECMF series fans are ETL listed and Conform to UL standard 507, Certified to CSA Standard C22.2 No 113.