Can this be used to move grinding and welding smoke?

If it is just smoke, then it won't be an issue for the fan. But you need to make sure there won't be any hard particles going into the fan, as they can damage the blade and the motor.

In a pets grooming salon dogs hair is flying all over the place when we blow dry the dogs. Can this unit be used to suck the dogs hair to a canister?

Hello, Unfortunately, this fan will not work well for your application. Pet hair will be getting stuck inside the unit and getting wrapped around the impeller and fan's rotor, which can potentially increase chances of overheating and malfunction. If you still decide to us it for this application you need to ensure that there is a filter placed before the fan which will catch all of the hair before it reaches fan's parts. This somewhat defeats the purpose, as you want the hair to go into a canister and not to be trapped on the filter surface before the hair reaches the fan. Hope this helps. Best regards, TerraBloom

Does this fan have a dc motor? and is it pwm controlled?

This fan has a EC motor, which is a subtype of DC motors. Key difference is that it doesn't require a DC adapter since the conversion of electricity current happens inside the fan instead of DC adapter. The fan is controlled using Potentiometer technology and it yields exactly the same results as PWM.

Is the shipping discreet?

Hi Daniel, You will need to select an option to gift wrap your order so that Amazon ships it in a additional box. We do not package or ship our fans directly to Amazon customers, it is done by Amazon staff from Amazon warehouses. Best regards, TerraBloom Team

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Description

🌿 Elevate your airflow game with silent, smart power!

BUILT TO LAST - Durable rust-resistant steel housing with IPX4 water protection for demanding environments.
PRECISION SPEED CONTROL - Variable speed dial from 0-100% for tailored airflow without disruption.
VERSATILE PRO GRADE USE - Perfect for grow tents, vertical farms, HVAC, and air filtration—engineered for large spaces.
WHISPER QUIET OPERATION - Ultra-low 18 dBA noise keeps your space peaceful and focused.
POWERFUL EFFICIENT AIRFLOW - Delivers 141 CFM with just 21 watts for eco-smart ventilation.

The TerraBloom 4 Inch Inline Fan ECMF-100 is a premium, energy-efficient ventilation solution featuring a brushless EC motor and dual jet blades. It delivers 141 CFM airflow at only 21 watts, operates quietly at 18 dBA, and offers precise speed control via a digital controller. Its rugged, rust-resistant steel casing with IPX4 rating ensures durability in demanding indoor environments like grow tents and HVAC systems. Backed by a 2-year warranty, it’s designed for professionals seeking reliable, whisper-quiet climate control.

Specifications

Brand	TerraBloom
Color	Black
Electric fan design	Exhaust Fan
Power Source	AC
Product Dimensions	5.9"D x 6.3"W x 7.3"H
Room Type	Kitchen
Recommended Uses For Product	Farms, Home
Noise Level	28 dB
Wattage	21 watts
Finish Type	Matte
Air Flow Capacity	141 Cubic Feet Per Minute
Blade Length	4 Inches
Voltage	120 Volts
Item Weight	0.01 Ounces
Included Components	Remote
Indoor/Outdoor Usage	Indoor
Specification Met	ETL
Control Method	Touch
Manufacturer	TerraBloom
UPC	858355007447
Size	4" / 100mm Diameter (141CFM, 21W, Steel Housing)
Item Weight	0.01 ounces
Is Discontinued By Manufacturer	No
Finish	Matte
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Warranty Description	All ECMF series fans are covered by a 2 year warranty against manufacturing defects

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