China Inline Duct Fans Manufacturers Suppliers Factory - Customized Inline Duct Fans

BLAUBERG INLINE DUCT FANS

Blauberg Motoren inline duct fans combine compact in-duct installation, optimized airflow geometry and configurable EC, DC and AC motor platforms for ventilation systems, HVAC equipment and OEM applications that require reliable airflow through round ducts and space-constrained installations.

FLEXIBLE SIZING, MOTOR OPTIONS，

RELIABLE AIRFLOW

Blauberg Motoren inline duct fans cover common duct sizes from 100 mm to 315 mm, with EC, AC and DC motor options for a wide range of ventilation and HVAC requirements. Available control solutions help match the fan to different operating conditions.

Φ100~315 mm
62 dB(A)
0-10V / PWM
AMCA210 / GB/T 1236
EC / DC / AC motors

100mm
Product sizes
25mm
Product sizes
150mm
Product sizes
160mm
Product sizes
200mm
Product sizes
250mm
Product sizes
315mm
Product sizes

WHAT IS AN INLINE DUCT FAN?

An inline duct fan is installed directly inside a circular duct to move air through the ventilation system. Typically hidden above ceilings, in service spaces or inside equipment, it provides compact installation while maintaining reliable airflow and manageable noise. Selection should consider airflow, static pressure and installation conditions.

COMPACT ROUND DUCT INTEGRATION

Compatible with 100, 125, 150, 160, 200, 250, and 315 mm duct sizes, featuring a compact housing, a one-piece construction, and a lightweight design for easy installation.

RELIABLE MOTOR AND IMPELLER PLATFORM

Catalogue characteristics include S1 continuous operation, ball bearings, PA66+GF or metal impellers and clockwise rotation viewed from the rotor end.

PROJECT-READY PROTECTION LOGIC

EC and DC models include locked-rotor, thermal and high/low voltage protection. AC models use thermal motor protection for standard duct ventilation duties.

Need Help Selecting the Right
Inline Duct Fan?

① Send Operating Point
② Get Model Shortlist
③ Confirm Quotation or Sample Testing

Project data that speeds up quotation

Send us your project data. Blauberg Motoren will review your airflow, pressure, installation and motor requirements, help identify the suitable EC, DC or AC platform, and provide a model shortlist for quotation or testing.

Duct diameter, installation space and mounting direction
Required airflow, static pressure and system resistance
Voltage, frequency and preferred motor platform
Control method, noise target and protection requirements
Sample quantity, project timeline and customization needs

CHOOSE THE RIGHT INLINE FAN PLATFORM

Compare AC,DC and EC plalforms by power supply, control method and application requirements.

◎ EC INLINE FANS

Energy-efficient inline fans for variable-speed ventilation,demand-controlled airflow and intelligent HVAC systems.Available with 0-10V or PWM speed control forprecise airflow adjustment.

IC/IL 0-10V/PWM

◎ DC INLINE FANS

Low-voltage inline fans for equipment ventilation. compact machines and OEM airlow modules. Suitable for systems powered by 24V or 48V DC.

ID/lE OEM EQUIPMENT

◎ AC INLINE FANS

Cost-effectiveinline fansfor standardventilation applications requiring simple wiring and reliable fixed-speed operation. Available with PA66+GF or metal impellers for different installation and airflow requirements.

IL PA66+GF/METAL

NEED HELP CHOOSING THE RIGHT INLINE FAN PLATFORM?

Share your duct diameter,airflow,static pressure and voltage requirements.Blauberg Motoren can help narrow down suitable AC,DC or EC options before sample testing.

125mm EC Ventilation in Line Duct Fan Exhaust Fan for FFU
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
125mm EC Exhaust Duct Blower Centrifugal Fan for Condense...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
125mm EC Energy Saving Quiet Duct Fan Exhaust Fan Duct fo...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
250mm EC External Rotor Duct Fan Strong Wind Duct Fan for...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
315mm EC Ventilation Duct Blower Fan Manufacturers for Ma...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
315mm EC Fan Manufacturers Ducted Exhaust Fan Garage Exha...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
100mm EC Exhaust Strong Wind Duct Fan for Heat Pumps
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000
100mm EC Strong Wind Duct Fan Energy Saving Quiet Duct Fa...
Certificate:UL,CE,ROHS,CCC,ISO;. Supply Ability: 400,000 pcs per year; . MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.. HS Code:8414593000

First 12 3 Last

INLINE DUCT FAN PARAMETERS AND EC / DC / AC PLATFORM CHOICE

Compare key parameters across EC,DC and AC platforms to narrow down suitable fan options for your application.

Final model selection should be confirmed based on the required airflow and static pressure operating point.

productcate-1600-653

FAN TYPE	MAIN MODELS	VOLTAGE	POWER	SPEED	APPLICATION FOCUS
EC Inline Fan Motors	IC-B/IL-B	100-130/200-277VAC	85-220 W	2500-3700 RPM	Energy-efficient HVAC,demand-controlled ventilation and variable-speed applications
DC Inline Fan Motors	ID-B/IE-B	24/48VDC	85-200 W	2500－3500 RPM	Low-voltage OEM equipment, compact machines and 24/48 VDC systems
AC Inline Fan Motors	IL-B	100-277VAC	62-320 W	2100-3200 RPM	Standardventilation wherecostefficiency, simplewiring and fixed-speed operation are priorities

HAVE AN OPERATING POINT OR SYSTEM CURVE?

Send your required airflow,static pressure and system curve. Our team can help narrow down the most suitable EC,DC or AC inline duct fan model for your application.

APPLICATIONS ACROSS DIVERSE VENTILATION SYSTEMS

From residential and commercial ventilation to greenhouse climate control, refrigeration and OEM equipment, Blauberg inline duct fans provide compact, reliable airflow solutions for round-duct applications.

Typical Applications

Bathrooms,kitchens,toilets,offices,Retal Stores,cafes,hotels,villas,factories and
ships.

System Integration

Above ceilings·Inside service spaces·In
duct branches·In equipment rooms+ Within OEM ventilation modules

Key Selection Considerations

Compact installtion·Hidden integration· Service access· Stable airflow through
duct resistance

Commercial building ventilation

Suitable for shops, offices, hotels, cafes, corridors and public rooms where ducted supply or exhaust airflow needs to stay quiet, compact and easy to service.

Supply Air Exhaust Air

Greenhouse Climate Control

Designed for greenhouse air circulation and ventilation, helping maintain balanced airflow and stable indoor climate conditions for plant growth.

Air CirculationClimate Control

Refrigeration & Cold Storage

Suitable for cold rooms, cold storage areas, display areas, equipment service spaces and auxiliary ducts. Stable airflow supports ventilation and air management around refrigeration equipment and within enclosed spaces.

Cold Storage Air Management

Indoor Air & OEM

Suitable for air purification, dehumidification, heat pump, drying and other indoor air treatment equipment, as well as compact OEM products requiring flexible and reliable airflow solutions.

Air Treatment OEM Integration

DEVELOPING AN INLINE VENTILATION SYSTEM OR OEM PRODUCT?

Share your application, airflow target and system requirements. The Blauberg Motoren team can help identify a suitable catalogue model or develop a derived configuration for your project.

INLINE AIRFLOW & INSTALLATION

CONSIDERATIONS

Inline duct fans can be installed above ceilings, in narrow service spaces, equipment rooms or at different points,

along the duct system. Proper installation should account for airflow direction, duct resistance, mounting

orientation, service clearance, condensate risk, vibration control and the selected motor control method.

STANDARD ROUND-DUCT

INSTALLATION

Airflow follows the duct axis, so selection depends on the actual duct layout and system resistance, not just duct diameter. For accurate selection and quotation, provide airflow, static pressure, installation position, and service clearance.

AIRFLOW PATH

Confirm supply or exhaust direction, duct bends, grilles, dampers and silencers before final model selection.

MOUNTING & SERVICE

Check ceiling height, mounting and bracket positions, access-panel dimensions, vibration control and potential condensate exposure.

CONTROL METHOD

Specify the required control method together with the operating point: EC 0-10V / PWM, DC low-voltage control or standard AC operation.

HOW TO SELECT AN INLINE DUCT FAN FOR YOUR VENTILATION SYSTEM?

Inline duct fan selection should start with the actual system operating point, rather than maximum airflow alone. Define duct size, airflow, static pressure, motor platform, control method and installation constraints together to identify the right model.

CONFIRM THE DUCT DIAMETER

Start by matching the fan connection size to the round duct diameter. Available catalogue sizes include 100, 125, 150, 160, 200, 250 and 315 mm.

DEFINE AIRFLOW & STATIC PRESSURE

Provide the required operating point for accurate model selection. Filters, coils, silencers, bends and long duct runs can add system resistance and affect the required fan performance.

CHOOSE EC, DC OR AC MOTOR PLATFORM

Use EC for intelligent variable speed,DC for low-voltage OEM systems and AC for standard cost-effective ventilation duties.

CHECK INSTALLATION & SERVICE SPACE

Confirm available ceiling or equipment space, mounting orientation, bracket position, service access, vibration control and condensate exposure. Also specify whether the fan is used for supply or exhaust air.

CONFIRM CONTROL & PROTECTION REQUIREMENTS

Define the required control method, such as 0-10V, PWM, sensor control or standard AC operation, together with relevant requirements for IP rating, insulation class, operating temperature and noise.

PREPARE THE DATA FOR QUOTATION

For model selection and quotation, provide the available model reference, voltage, frequency, airflow, static pressure, quantity and required sample timing. Include any specific wiring, labeling, packaging or OEM requirements.

NEED HELP SELECTING THE RIGHT MODEL?

Send your duct diameter, airflow target and static pressure. Blauberg Motoren can help compare suitable catalogue models and identify the right configuration before quotation or sample testing.

CHOOSE THE RIGHT INLINE FAN TYPE

The right fan configuration depends on duct resistance, airflow requirements, sound targets, installation space

and system operating conditions.

Mixed-flow inline fans

A practical choice for general duct ventilation where compact installation and a balanced combination of airflow, pressure and sound performance are required. Suitable for residential, commercial and light industrial ventilation systems.

Centrifugal inline fans

Designed for duct systems with higher resistance, including applications with filters, coils, silencers or long duct runs. A suitable choice when higher static pressure capability and stable airflow are more important than minimum housing size.

Compact Low-Noise Inline Fans

Designed for small duct branches, short duct runs and space-constrained installations where low sound levels, low power consumption and simple installation are priorities. Suitable for compact ventilation and humid environments.

CONTROL OPTIONS FOR

INLINE FAN SYSTEMS

EC and DC inline fan systems can support
variable-speed control, sensor-based operation and
BMS integration to match airflow,pressure and
demand requirements.

0-10V Speed Control

Provides continuous fan speed adjustment through a 0–10V DC control signal. Suitable for applications requiring adjustable airflow or pressure and integration with HVAC controllers or building management systems.

PWM Speed Control

Regulates motor speed through pulse-width modulation. It enables precise speed adjustment for compatible EC or DC fan systems and supports stable operation at the required airflow level.

Sensor & Closed-Loop Control

Fan speed can be adjusted automatically according to signals from pressure, temperature, humidity or other sensors. This enables demand-controlled ventilation, constant-pressure operation and responsive airflow management in HVAC and OEM systems.

Download the Catalogue & Send Your Project Data

Download the inline fan catalogue for engineering review, then send your operating point and project requirements to our team for model confirmation.

Inline Duct Fan Catalogue

Download PDF ↗

Compare EC, DC and AC inline fan series and review key technical data before final model selection.

Model tables & P-Q performance curves
Dimensional drawings & wiring information
Control, protection & construction details

Project Selection Support

Send Project Data ↗

Send application, duct diameter, airflow, static pressure, voltage, control method and sample timing.

Model recommendation
Quotation preparation
Sample or OEM version discussion

Inlie Duct Fan FAQs
for Buyers and OEMs

What is an inline duct fan?

A: An inline duct fan is installed directly within a ventilation duct to move supply, exhaust or transfer air through the system. It is commonly used where the fan needs to be installed inside a ceiling void, service space or equipment enclosure.

What size inline duct fan do I need?

A: Fan size should be selected based on duct diameter, required airflow, available static pressure and installation space. Blauberg Motoren inline fan platforms cover common round duct sizes from 100 to 315 mm, depending on the series.

Can an inline duct fan overcome static pressure in a duct system?

A: Yes. An appropriately selected inline duct fan can overcome system resistance from filters, coils, silencers, grilles, dampers and long duct runs. Fan selection should be checked against the system resistance and the fan’s P-Q performance curve at the required operating point.

What is the difference between mixed-flow and centrifugal inline duct fans?

A: Mixed-flow inline fans are generally suited to compact ventilation systems requiring a balance of airflow, pressure and installation size. Centrifugal inline fans are better to systems with higher resistance, such as those with filters, coils, silencers or longer duct runs.

When should I choose an EC inline duct fan?

A: Choose an EC inline fan when the application requires variable-speed operation, adjustable airflow, energy-efficient operation or integration with external control systems. EC platforms can support control options such as 0-10V, PWM and sensor-based control, depending on the model.

Can inline duct fans be used for both supply and exhaust air?

A: Yes. Inline duct fans can be used for supply, exhaust or air transfer applications when the selected model is suitable for the required airflow direction, pressure, installation position and operating conditions.

Are inline duct fans suitable for bathrooms, kitchens and humid environments?

A: Selected Blauberg inline fan models can be used for ventilation in bathrooms, kitchens and other humid environments. Model selection should consider airflow, static pressure, humidity exposure, installation conditions and applicable local requirements.

What information is needed to request a quotation?

A: For model selection and quotation, provide the duct diameter, required airflow, static pressure, voltage, frequency, control method, installation position and quantity. For OEM projects, additional information such as mounting dimensions, wiring, connectors, labels, packaging and sample requirements can also be provided.

Suzhou Blauberg Motoren Technology Co., Ltd. is one of the most professional inline duct fans manufacturers and suppliers in China, featured by quality products and good service. Please rest assured to buy bulk customized inline duct fans from our factory. Welcome to contact us for quotation.

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