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Prima Klima 360 m³/h Ø 125 mm
The Prima Klima PK125-L inline duct fan delivers 360 m³/h airflow through its 125 mm flange connection while consuming just 52W of power. Built around an ebm-papst AC motor with sealed ball bearings and backward-curved impeller blades, this centrifugal extractor achieves high static pressure with low noise output. The flame-retardant polyamide housing withstands operating temperatures up to 50°C, making it suitable for demanding grow room environments. Supplied with mounting bracket, power cable and plug for immediate installation. A proven performer for grow spaces up to 1 m² running 400W HPS lighting. Explore the PK125-L at plantandflower.be.
Prima Klima PK125-L inline extractor fan – 360 m³/h at 52W for efficient grow room ventilation
Effective air extraction directly impacts temperature, humidity and ultimately yield in any indoor growing environment. The Prima Klima PK125-L is a centrifugal inline duct fan engineered to deliver consistent 360 m³/h airflow through a Ø 125 mm connection at just 52 Watts power draw. At its core sits an ebm-papst AC motor — an industry-standard powerplant known for reliability in continuous-duty applications. For growers who need variable airflow, the Prima Klima 2-Speed 220-360 m³/h offers dual-speed operation in the same diameter.
Engineering and build quality
Prima Klima's partnership with German motor manufacturer ebm-papst results in a fan that outperforms budget alternatives in both durability and acoustic performance. The sealed ball bearings require zero maintenance and eliminate the friction-related noise degradation common in sleeve-bearing motors after extended use. The backward-curved centrifugal impeller generates high static pressure — a critical factor when operating with carbon filters that restrict airflow. The entire housing is manufactured from flame-retardant polyamide (nylon), combining impact resistance with lightweight construction at just 2.4 kg. Unlike axial fan designs that struggle against back-pressure, the centrifugal architecture of the PK125-L maintains consistent airflow even when connected to longer duct runs or restrictive filter setups.
Performance data and specifications
- Maximum airflow: 360 m³/h — sufficient extraction for grow spaces up to 1 m² with 400W HPS.
- Flange diameter: Ø 125 mm, compatible with standard ducting and carbon filters.
- Power consumption: 52W at 230V, 50/60 Hz, 0.23A — efficient for 24/7 operation.
- Maximum operating temperature: 50°C — rated for placement near heat-generating light sources.
- Dimensions: 244 x 220 mm (W x H) — compact footprint for tight installations.
- Weight: 2.4 kg net (2.96 kg gross) — wall or ceiling mountable with included bracket.
Optimising your ventilation setup
Pair the PK125-L with a Can-Lite 425 carbon filter for effective odour control. The filter's 425 m³/h rating provides approximately 18% headroom over the fan's maximum output, preventing motor strain while ensuring thorough filtration. Connect components using 127 mm aluminium ducting for rigid, airtight connections. Position the extractor at the top of your grow space where hot air naturally accumulates, and route the exhaust outside the growing area or out of the building entirely. The supplied mounting bracket allows horizontal or vertical installation in any orientation, giving you flexibility in placement.
Noise management for residential environments
For noise-sensitive installations, adding a 125 mm flexible silencer between the fan and ducting significantly reduces airborne sound transmission. The aerodynamic impeller design already minimises turbulence at the source, and the polyamide housing dampens mechanical vibrations. Running the PK125-L with an external speed controller at reduced output further lowers noise levels during nighttime cycles, when ambient noise in your environment drops and fan sound becomes more noticeable.
Order the Prima Klima PK125-L from plantandflower.be for fast shipping across Belgium. Built to deliver reliable extraction performance across multiple growing cycles.
What grow room size is the Prima Klima PK125-L 360 m³/h suitable for?
The PK125-L at 360 m³/h provides adequate extraction for grow spaces up to approximately 1 m² when running a 400W HPS lamp. With LED lighting producing less heat, the same fan can handle slightly larger areas. Factor in a 20-25% reduction in effective airflow when a carbon filter is connected inline.
Can I use a speed controller with the PK125-L single-speed extractor?
The PK125-L is compatible with external AC fan speed controllers, allowing you to reduce airflow during cooler periods or nighttime cycles. This extends motor life and reduces energy consumption. For integrated dual-speed functionality, consider the Prima Klima 2-Speed model with the same 125 mm connection.
What carbon filter capacity should I pair with a 360 m³/h extraction fan?
Select a carbon filter rated at least 15-20% above your fan's maximum airflow. For the PK125-L at 360 m³/h, a filter with 400-425 m³/h capacity is optimal. This prevents the motor from working against excessive resistance while ensuring complete odour neutralisation.
How does the ebm-papst motor in the PK125-L compare to budget fan motors?
The ebm-papst AC motor uses sealed ball bearings instead of sleeve bearings, eliminating maintenance requirements and preventing noise increase over time. The backward-curved impeller design delivers higher static pressure at lower noise levels compared to axial fan motors, which is especially important when operating with the resistance of a carbon filter.