Grow Industry Big Farmer Extraction Kit 4250m3 – High Flow Extraction Kit for Cultivation
Grow Industry Big Farmer Extraction Kit 4250m3 – High Flow Extraction Kit for Cultivation
- The Big Farmer 4250 m³ Extraction Kit is designed for medium-to-large grow rooms that require a robust, quiet, and high-performance ventilation system. Its high-flow extractor, combined with a top-quality activated carbon filter, ensures continuous air renewal and effective odor elimination.
- - Airflow: approx. 4250 m³/h
- - Includes soundproof extractor + activated carbon filter.
- - Flexible ducts and installation accessories included.
- - Designed for continuous operation without loss of efficiency.
- - Compatible with passive or active air inlets.
- - Durable construction for demanding grows.
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Full description
The Grow Industry Big Farmer Extraction Kit 4250 m³/h is a complete ventilation solution for large-scale crops. Designed for professional grow rooms and large surface grow rooms, this kit provides an extraction flow rate of up to 4250 m³/h through an extractor 315mm mouth, ensuring constant air renewal, effective control of temperature and humidity and total elimination of odors thanks to its high-density active carbon filter.
The kit includes high flow centrifugal extractor, active carbon filter compatible with the mouth of the extractor, flexible aluminum tube and the metal clamps necessary for a quick and safe installation. It is the ideal option for professional growers who need a robust, silent and durable system, capable of managing large volumes of air in industrial growing rooms or greenhouses.
With the Big Farmer 4250 m³/h Kit you will have a perfectly controlled growing environment: renewed air, stable temperature, no annoying odors and a long useful life of the filter thanks to its virgin active carbon of mineral origin.
Maximum flow: 4250 m³/h, ideal for large surface growing rooms.
Mouth diameter: 315 mm, compatible with the included filter and tube.
Active carbon filter: High density for total odor elimination in large volumes.
Complete kit: extractor, carbon filter, flexible aluminum tube and clamps included.
Warranty
At GrowIndustry we only work with proven quality products and trusted brands.
Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.
Your satisfaction is our priority.
How to use
The Big Farmer 4250 m³ Kit is optimized for quick and safe assembly, with no additional calculations required.
- Calculate the room's volume: height × width × length = m³.
- Multiply that result × 60 to verify the necessary airflow.
- Install the extractor and connect the activated carbon filter in-line.
- Join the flexible ducts and seal with aluminum tape to prevent leaks.
- Maintain negative pressure in the grow space for total odor control.
- Periodically check the filter's condition and replace it when it loses effectiveness.

Grow Industry Big Farmer Extraction Kit 4250m3 – High Flow Extraction Kit for Cultivation
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Frequently asked questions
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It provides an extraction airflow of up to 4250 m³/h through a fan with a 315 mm outlet. That volume is designed for large grow rooms. It ensures constant air renewal throughout the whole cycle.
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It includes the high flow centrifugal fan, an activated carbon filter compatible with the fan's outlet, flexible aluminium ducting and the necessary metal clamps. That gives you a quick, safe installation without buying anything else. Everything is sized to work together.
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By renewing the air constantly, it keeps the temperature stable and the humidity under control in the room. That translates into a more predictable growing environment and healthier plants. It also removes odours thanks to the carbon filter.
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It uses high density virgin activated carbon of mineral origin, designed to remove odours completely even in large volumes. Virgin carbon is also what gives the filter a long service life. It is the part of the system you really shouldn't skimp on.
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It is the ideal option for professional growers who need a robust, quiet and durable system capable of handling large volumes of air. It fits industrial grow rooms or greenhouses. For a home tent it would be overkill.
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Yes, the outlet diameter is 315 mm and both the filter and the ducting included are compatible with that size. The kit's metal clamps hold the joints in place so they don't move. That way you avoid leaks and pressure losses.