will this make my electricity bill go up significantly?

No more than any other type of fan in your house

Does it come with pre-filter?

Yes it does..cloth like fabric that wraps around metal carbon filter cage!!

How do you clean this? Used mine for 1 season, realized not much air coming out, washed prefilter, not much better, now just sits on workbench.

Once its plugged it's done. Read that city water in a humidifier and carbon filter is bad. Too much mineral deposits in the air can plug up cabin filter. I only use it when needed

Will the 6 inc be to much for my 36×36×71 grow tent

The velocity will not be to much for your tent. The fan speed can be controlled and a damper may be installed inline to make any adjustments required. I have one on a 3’x3’ tent and a 4’x 4’ tent running wide open on both, no problem.

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Description

🌿 Elevate your grow game with airflow that means business!

SECURE RUST FREE SETUP - Stainless steel clamps guarantee a rock-solid connection, preventing leaks and maintaining peak performance.
ACTIVATED CARBON PURITY - Premium Australian charcoal filter traps odors and contaminants, ensuring a clean, healthy grow environment.
ULTIMATE CLIMATE CONTROL - Keep your grow tent perfectly cool and fresh with powerful 390 CFM airflow and whisper-quiet 34dB operation.
PRECISION SPEED MANAGEMENT - Adjust fan speed seamlessly with the included controller for tailored ventilation that matches your plants’ needs.
DURABLE FIRE SAFE DUCTING - Heavy-duty 3-layer aluminum foil ducting with fire-retardant PET core keeps airflow safe and efficient.

The VIVOSUN 6 Inch 390 CFM Inline Fan Combo is a professional-grade ventilation system designed for grow tents. Featuring a powerful 2450 RPM galvanized steel fan, a premium activated carbon filter with 54% open mesh for optimal airflow, and a built-in temperature and humidity monitor, it ensures precise climate control. The kit includes fire-retardant, multi-layer aluminum ducting and rust-free stainless steel clamps for a secure, durable setup. Operating quietly at 34dB and powered by 190 watts, this combo is engineered for efficient, indoor grow tent ventilation.

Specifications

Brand	VIVOSUN
Color	Silver/Black
Electric fan design	Blower
Power Source	Corded Electric
Style	Modern
Product Dimensions	11.8"D x 3.7"W x 8.7"H
Room Type	Kitchen
Special Feature	Lightweight
Recommended Uses For Product	Indoor
Noise Level	37 dB
Wattage	190 watts
Finish Type	Powder Coated
Air Flow Capacity	3.9E+2 Cubic Feet Per Minute
Blade Length	6 Inches
Speed	2.45E+3 RPM
Voltage	120 Volts
Included Components	Cord
Indoor/Outdoor Usage	Indoor
Model Name	Inline Fan R8 Combo
Specification Met	fire-retardant, indoor-safe
Control Method	App
Blade Material	Plastic
Efficiency	effective, superior
Is Cordless?	No
Number of Power Levels	1
Manufacturer	VIVOSUN
UPC	736783799892
Size	6 Inch w/ Thermometer
Brand Name	VIVOSUN
Model Info	Inline Fan R6 Combo
Item Weight	20.7 pounds
Item model number	Inline Fan R6 Combo
Is Discontinued By Manufacturer	No
Part Number	150mm
Special Features	Lightweight
Material Type	Alloy Steel
Batteries Included?	No
Batteries Required?	No

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