Industrial exhaust fans do one job: move hot air, fumes and dust out of a building fast enough that people can work and goods do not spoil. Choosing an industrial fan is not about brand — it is about matching airflow and mounting to the space, and this applies whether you are replacing one unit on an existing wall or specifying a whole building. As a ventilation fan manufacturer in Zhejiang we build all four families below on the same lines, so the comparison is like for like. This page explains which of our four fan families fits which industrial space, how to calculate the airflow you need, and what to send us to get an exact quote in 24 hours.
Which Fan Fits Which Job
Production floor / workshop
Removes welding fume, heat and airborne dust. Wall shutter fans 8″–12″ mounted high on the external wall, opposite the fresh-air inlet.
Warehouse & storage hall
Stops condensation on stored goods and clears stale air. KLT panel exhaust fans 20B–30B, or large shutter fans for high bays.
Loading dock / dispatch
Clears vehicle exhaust during loading. Wall shutter fans 12″ or KLT-30B, interlocked with the dock door where possible.
Packing & assembly line
Operator comfort rather than process extraction. 6″–8″ shutter fans or KLT-10B–18B at regular intervals.
Control room / workshop office
Quiet, low-vibration air change next to the plant floor. Silent cabinet fans ducted to the outside.
Ducted run to an outside wall
When the fan cannot sit on the wall itself. BXF mixed-flow duct fans, 100–315 mm, for runs up to several metres.
How Much Airflow You Actually Need
Industrial ventilation is sized by air changes per hour (ACH): the building volume multiplied by how many times the air should be replaced each hour. Typical design values by space:
| Space type | Typical air changes per hour | Notes |
|---|---|---|
| General warehouse / storage | 6 – 8 ACH | Raise it if goods are moisture-sensitive |
| Assembly / packing workshop | 8 – 12 ACH | Occupant comfort driven |
| Welding / fabrication bay | 12 – 15 ACH | Local extraction still recommended at the arc |
| Loading dock / vehicle area | 10 – 15 ACH | Higher during peak dispatch hours |
| Storage with condensation risk | 4 – 6 ACH | Combine with dehumidification in humid climates |
Worked example. A hall of 20 m × 10 m × 5 m = 1,000 m³ used as a workshop at 10 ACH needs 10,000 m³/h, which is about 5,900 CFM. That is six 6″ units at 984 CFM each, or two larger 12″ units — the choice depends on how many wall openings you have.
These are design starting points, not a substitute for your HVAC engineer’s calculation. Send us the building dimensions and we will size it with you — or use the CFM calculator and read the longer airflow calculation guide.
PRODUCT RANGEFour Families, One Factory
Wall shutter series, 6″–12″
984 CFM at 6″ rising to about 4,500 CFM at 12″. Automatic back-draft shutter, continuous-duty motor, up to 180 Pa. See the 6″ specification →
KLT panel exhaust, 10B–30B
150–1,800 m³/h in six sizes. The volume workhorse for walls and windows, built around a pressed-steel panel and louvre shutter. Full KLT specification →
BXF mixed-flow duct fans
100–315 mm duct sizes for runs where the fan sits inside the duct line rather than on the wall. Inline duct fan page →
Silent cabinet fans
Acoustic enclosure for control rooms, offices and areas where noise is the constraint. Cabinet fan page →
Axial fans FA8-20 to FA16-40
8″–16″ axial impellers for high-volume, low-pressure duty — circulation and general dilution. See product list →
OEM & private label
Your brand on the housing and carton, from 500 pcs per model. How OEM works →
What the Wall Shutter Series Delivers
Key Specifications
| Fan diameter | 6″ (150 mm) — 8″ / 10″ / 12″ available |
|---|---|
| Airflow | 984 CFM / 1,670 m³/h at 6″; up to about 4,500 CFM at 12″ |
| Static pressure | Up to 180 Pa at 6″ (model dependent) |
| Power | 80 – 150 W (6″); higher on larger sizes |
| Voltage | 220-240V / 50Hz standard; 110V / 60Hz and 60Hz Gulf versions available |
| Noise | ≤ 62 dB(A) at 6″ |
| Shutter | Automatic back-draft louvre — closes when the fan stops |
| Duty | Continuous operation; every unit test-run before packing |
| Certification | CE (ISO 9001, CCC and CB for the factory) |
| Price | On request — formal quote within 24 hours |
Pricing depends on size, voltage and quantity. Send your target airflow, voltage and destination port — exact quote within 24 hours.
Certificate numbers are published so you can verify them independently — check them on the verification page or read the certification guide.
BEFORE YOU ORDERWhat Industrial Buyers Ask Us First
MOQ and lead time. Stock models: 100 pcs, shipping from inventory. OEM with your branding: 500 pcs per model, bulk production 25–35 days from deposit and confirmed artwork. The MOQ guide explains why the two thresholds differ.
Voltage for your market. Standard is 220-240V/50Hz. 110V/60Hz for North America and 60Hz versions for the Gulf are built to order — see the 60Hz Gulf voltage page for detail.
How many fit in a container. Sizes and carton volumes vary enough that this changes your landed cost. The container loading guide has per-model figures for 20GP, 40GP and 40HQ.
Where they are made. Four workshops, 50,000 m² of production buildings, twelve injection machines and eight assembly lines in Shengzhou, Zhejiang — see the factory and capacity page.
BUYER FAQFrequently Asked Questions
What size exhaust fan do I need for a 1,000 m³ warehouse? +
Can you supply 60Hz or 110V versions? +
Does the shutter stop air coming back in? +
Is the motor rated for continuous running? +
Can the fan be mounted with ducting instead of on the wall? +
What certifications come with the fan? +
Do you supply spare parts and motors? +
Send Your Room Size, Get a Sized Recommendation
Tell us the building dimensions, the process inside, the voltage and the destination port. We reply with the airflow you need, the models that meet it and a formal quote — within 24 hours.