Popular Sales EC Duct Inline Fan of 4inch

1.built in layer of wool insulation materials 

-possess patented industrial design
-use sustainable insulation material
-lower the noise level of airflow operation effectively .
2.backward -curved fan impeeller

-operate at low sound levels
-overcome high static pressure
-do not stall or overload motor at low airflow
3.completely sealed outer case 

-consist of waterproof fabric entity
-resis to UV and corrosion resistant
-be easy to install both indoor and outdoor areas .
4.external rotor motor design 

-provide superior motor cooling and durability
-use permanently lubricate ball bearings
-perform maintenance free operation 

Product Application

-keep the air fresh ;Suitable for ventilation in a wide range of residential ,commercial and industrial applications ;

-meeting room ;wine cellars ;laundries ;data rooms ;factory workshop ;warehouses;hospital ;hotel and other building issue ;

Q1: Are you a factory ?

Yes, we are a factory.we professionally manufacture cooling fan and motor for more than 10 years.

Q2.Can you supply samples for inline duct fan ?

Yes, we can supply samples

Q3. How to deal with if customers quality complaints?

First, help customer reduce the cost of losses, eg. replacement and offer solutions;
Second, investigate the quality problem;
Third, report the result to customer and assign responsibility;
Forth, improved workmanship or remind customer to avoid the problem.

Q4.Can I use my own logo on the inline ?

Yes, customers' logo, size and design are acceptable, OEM&ODM are welcomed.

Q5:What is DC Fan and AC fan?

DC fan is power by DC voltage, which normally is 3V, 5V, 12V, 24V, 48V, 60V and 72V.
AC fan is power by AC voltage, which normally is 110V, 220V and 380V.

q6:What can I do if we can not find the suitable fan model in the fan list?

Please contact us for customized fans.
Please contact us for more information about our company and fans.