• Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
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  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
  • Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan
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Spider Farmer 4" Inline Fan Kit | 205 CFM Grow Tent Fan

£169.99
£169.99
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Total Microclimate Management in One Box
The Spider Farmer 4" Inline Fan Kit is a professional-grade, all-in-one ventilation and air filtration assembly designed to take total control of your growing climate. Ideal for hobbyists and space-conscious growers, this complete kit eliminates the frustration of buying unmatched ventilation pieces. By combining a high-pressure inline exhaust fan, an industrial-tier activated carbon filter, and flexible ducting, it guarantees continuous fresh air circulation while completely neutralizing pungent grow room odours.
High-Efficiency Vortex Airflow & Ultra-Quiet Operation
At the core of the extraction unit is a next-generation brushless EC motor paired with custom oblique mixed-flow blades. This internal architecture reduces airflow resistance by 40%, allowing the fan to pull a massive 205 CFM of air while drawing a mere 27 watts of power. Operating at a whisper-quiet 26.8 dB, it delivers heavy-duty ventilation with 50% less acoustic noise than traditional AC blower fans. The heavy-duty housing is fully dustproof and waterproof, ensuring absolute electrical safety in humid environments.
Commercial-Grade 100% Odour Scrubbing
The kit includes a professional 4-Inch Air Carbon Filter constructed with a heavy-duty metal housing and premium RC412 Australian activated charcoal. Featuring an extra-thick 38mm carbon bed and a surface area rating of 1200+ IAV, the filter traps and chemically neutralizes organic compounds, mold spores, and pollen. It comes equipped with a machine-washable cloth pre-filter designed to catch large dust particles, preventing premature clogging and extending the lifespan of the core activated carbon layer.
Smart Ecosystem Automation Ready
The 2025 edition features an integrated RJ12 data port interface, making it fully compatible with the advanced Spider Farmer GGS Smart Ecosystem. Using the dynamic 10-speed manual controller included in the box, or by linking it directly to a GGS environment hub, growers can unlock automated climate programming. This allows you to scale extraction speeds dynamically based on real-time temperature and humidity spikes, set minimum standby cycles, or manage your environment via the Spider Farmer App.
Best-Use Scenarios & Sizing Guide
To hit peak atmospheric efficiency, configure your 4-inch extraction kit for these ideal parameters:
  • Tent Sizing: Perfectly matched to achieve ideal air exchange rates (clearing the tent every 60 seconds) in 2'x2' (60x60cm) and 3'x3' (90x90cm) grow spaces.
  • Heat Mitigation: Excellent for managing ambient heat loads from LED grow lights drawing up to 300W.
  • Aroma Control: Best utilized as a negative-pressure exhaust setup, pulling air through the filter inside the tent and pushing scrubbed air out through a ceiling or window vent.
What’s Included in the Box
  • 1 × Spider Farmer 4-Inch Quiet EC Inline Duct Fan (205 CFM)
  • 1 × Premium RC412 Australian Activated Carbon Filter
  • 1 × Machine-Washable Fabric Filter Pre-Cover
  • 1 × 10-Speed Controller with Built-In RJ12 Smart Interface
  • 1 × 25 ft (7.6m) Double-Layer Aluminium & PVC Flexible Air Ducting
  • 3 × Stainless Steel Adjustable Worm-Drive Hose Clamps
  • 2 × Heavy-Duty Variable Rope Hanger Straps
Key Technical Specifications
  • Duct Opening Flange: 4 Inches (100 mm)
  • Airflow Capacity: 205 CFM
  • Power Consumption: 27W ±5%
  • Acoustic Noise Level: 26.8 dB(A)
  • Fan Maximum Speed: 3000 RPM
  • Carbon Filter Thickness: 38 mm Bed / RC412 Grade
  • Ducting Core: Heavy-Duty Steel Wire with Double-Layer PVC
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Quiet, Efficient Ventilation for Smaller Grows

Keep fresh air moving through your grow space with the Spider Farmer 4 Inch Inline Fan and Carbon Filter Kit, a compact ventilation solution designed for smaller grow tents and indoor growing environments.

The energy-efficient EC inline fan delivers up to 205 CFM of airflow while drawing just 27W, helping remove excess heat, humidity and stale air without excessive energy use. With an operating noise level of approximately 26.8 dB(A), it provides effective extraction while keeping fan noise to a minimum.

Paired with a 4-inch Australian charcoal carbon filter and flexible ducting, the system also helps reduce unwanted grow room odours. Adjustable fan speed gives you greater control over airflow, while RJ12 connectivity provides the option to integrate the fan with a compatible Spider Farmer GGS smart control system.

Shop 4 Inch Fan Kit

FAQs

The kit includes a 4-inch inline fan, 4-inch carbon filter, speed controller, flexible ducting, clamps and hanging accessories for setting up grow tent ventilation and filtration.

The inline fan delivers up to 205 CFM of airflow while drawing approximately 27W, providing efficient extraction for compact indoor growing spaces.

Spider Farmer recommends the 205 CFM system for smaller grow tents including approximately 60x60cm and 90x90cm setups. It can also suit some rectangular tents depending on the ventilation requirements.

Spider Farmer specifies an operating noise level of approximately 26.8 dB(A), making it a good option where growers want effective ventilation with relatively low fan noise.

Yes. The included carbon filter uses Australian charcoal to help capture unwanted odours and airborne particles as air is extracted from the growing space.

Yes. The fan features an RJ12 connection that allows it to connect to compatible Spider Farmer GGS controllers and smart control equipment. The GGS Controller is not included with this particular kit.