Blauberg Primo 400 Inline Fan | Largest in Range | 3350 m³/h High-Capacity Mixed Flow Ventilation

Maximum Airflow. Maximum Scale. The Flagship of the Blauberg Range.

The Blauberg Primo 400 is the largest and most powerful inline fan in the Blauberg Ventilatoren lineup, engineered for environments where smaller fans simply cannot keep up. Delivering 3350 m³/h through a 400mm mixed-flow impeller, this is a commercial-grade ventilation unit built for large-scale hydroponic grow rooms, industrial HVAC systems, and high-demand extraction applications. When your environment requires sustained, high-volume airflow through long duct runs, carbon filters, or complex ventilation networks, the Primo 400 is the fan that handles it without compromise.

The mixed-flow impeller combines axial airflow volume with centrifugal pressure capability, producing the kind of static pressure performance that keeps systems running effectively even under significant resistance. Built for continuous operation to European manufacturing standards, the Primo 400 sits at the top of the Blauberg range for a reason: it is engineered to perform at scale, day after day, in the most demanding conditions.

Key Benefits

• 3350 m³/h Airflow Capacity. The highest airflow output in the Blauberg inline fan range. Built for large environments where air exchange rates are critical.
• 400mm Inline Fan, Largest in Range. Maximum air handling capability in a precision-engineered inline format.
• Mixed Flow Impeller. Combines axial volume with centrifugal static pressure for efficient air movement through filters, long duct runs, and complex systems.
• High Static Pressure Output. Maintains performance through carbon filters, ducting resistance, and multi-branch ventilation layouts.
• Industrial-Grade Motor. Rated for continuous operation under heavy load. Built to run in commercial and large-scale grow environments without degradation.
• Durable Construction. Structural integrity and component quality matched to the demands of a 400mm, high-capacity system.
• Efficient Air Movement. Optimised airflow-to-power ratio through mixed flow engineering, delivering more output per watt than equivalent axial designs.
• European Engineered. Manufactured to Blauberg Ventilatoren's professional-grade production standards.

How It Works

The 400mm mixed-flow impeller draws air in axially and accelerates it with a centrifugal action, generating both the volume and the pressure needed to move large quantities of air through resistance-heavy systems. At 3350 m³/h, the Primo 400 can turn over the air in a large grow room or commercial space multiple times per hour, maintaining the temperature, humidity, and CO2 levels that high-yield cultivation demands. The industrial motor sustains this output continuously, without the performance drop-off that lighter-duty fans experience under sustained load.

System Features

• Fan Type. Mixed flow inline, 400mm diameter.
• Airflow Capacity. 3350 m³/h maximum output.
• Static Pressure. High, suitable for carbon filters, long duct runs, and complex ventilation layouts.
• Motor. Industrial-grade, continuous duty rated.
• Impeller. Mixed flow design, precision balanced.
• Range Position. Largest model in the Blauberg inline fan range.
• Operation. Continuous duty, commercial and industrial applications.
• Manufacturer. Blauberg Ventilatoren, Europe.

Applications

• Large Hydroponic Grow Room Ventilation. High air exchange rates for multi-light commercial grow facilities where smaller fans cannot maintain adequate airflow.
• Commercial Grow Facility Exhaust Systems. 3350 m³/h output handles the extraction demands of large-scale indoor cultivation operations.
• High Airflow Carbon Filter Systems. Mixed flow static pressure keeps carbon filters working effectively even in large, resistance-heavy setups.
• Industrial HVAC Duct Ventilation. Suitable for commercial and industrial duct systems requiring high-volume, sustained airflow.
• Warehouse and Large Space Air Extraction. Effective heat and humidity extraction in large enclosed environments.
• High-Capacity Ventilation Upgrades. The natural step up for operations that have outgrown mid-range inline fans.

What Sets It Apart

At 400mm and 3350 m³/h, the Primo 400 occupies a category of its own within the Blauberg range. This is not a fan you buy because it is the cheapest option. It is a fan you buy because your environment demands it. The mixed-flow impeller delivers the static pressure that large carbon filter setups and long duct runs require, while the industrial motor sustains that output continuously without the reliability concerns that come with lighter-duty units pushed beyond their design limits. The precision balancing required at 400mm diameter, the structural demands of the housing, and the quality of the motor assembly all contribute to a price point that reflects genuine engineering. For commercial growers, HVAC contractors, and large-scale operators who need maximum performance and long-term reliability, the Primo 400 is the benchmark in the Blauberg lineup.

Why the Primo 400 Commands a Premium

Large-format inline fans are not simply scaled-up versions of smaller units. At 400mm, the engineering demands increase significantly: the impeller requires more precise balancing to avoid vibration at high speeds, the motor must sustain higher torque loads continuously, and the housing must maintain structural integrity under the pressure differentials generated at 3350 m³/h. The Primo 400 is built to meet all of these requirements to European manufacturing standards. You are paying for maximum scale, sustained performance, and the reliability that commercial operations depend on.

Technical Specifications

• Size. 400mm
• Airflow Capacity. 3350 m³/h
• Fan Type. Mixed Flow Inline
• Static Pressure. High, suitable for filters and long duct runs
• Motor. Industrial-grade, continuous duty
• Impeller. Mixed flow, precision balanced
• Range Position. Largest model in the Blauberg inline fan range
• Operation. Continuous duty
• Manufacturer. Blauberg Ventilatoren
• Origin. Europe

Frequently Asked Questions

What size fan do I need for my grow tent?

A general rule is to replace the air volume in your tent every 1–3 minutes. Calculate your tent volume (length × width × height in metres) and select a fan rated to move that volume per minute. For Blauberg Primo 400 Inline Fan, check the airflow specification (m³/hr) and divide by 60 to get m³/min. Allow extra capacity if you are running a carbon filter, as filters reduce effective airflow by 20–25%.

How loud is Blauberg Primo 400 Inline Fan?

Blauberg Primo 400 Inline Fan is engineered for low-noise operation. The dB rating is listed in the product specifications — for reference, under 35dB is near-silent in a closed room, 40–50dB is comparable to a quiet office, and over 55dB will be audible through walls. For stealth grows or home setups, pair Blauberg Primo 400 Inline Fan with an acoustic duct silencer to further reduce sound transmission.

Can I control the speed of Blauberg Primo 400 Inline Fan?

Yes — Blauberg Primo 400 Inline Fan is compatible with fan speed controllers. EC-motor fans are best paired with dedicated EC controllers for smooth, stepless speed control. AC-motor fans work with standard voltage-based speed controllers. Running your fan at 70–80% speed is a practical balance between airflow performance, noise reduction, and motor longevity.

How do I install Blauberg Primo 400 Inline Fan in my grow tent?

Mount Blauberg Primo 400 Inline Fan at the top of your grow tent using the included hanging brackets or a custom ratchet hanger. Connect ducting between Blauberg Primo 400 Inline Fan and your carbon filter using appropriate duct clamps. Ensure all connections are sealed to maximise negative pressure and eliminate light leaks. Intake air should enter near the bottom of the tent and exhaust should exit from the top.

Does Blauberg Primo 400 Inline Fan ship fast within Australia?

Yes — Blauberg Primo 400 Inline Fan ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.