Vostermans Ventilation MultiFan V-FloFan – Tube Bracket

The Vostermans Ventilation MultiFan V-FloFan with Tube Bracket is a greenhouse circulation fan that delivers vertical airflow directly to crop level, optimizing heat distribution and reducing humidity throughout the growing space. Designed for modern greenhouse structures, the V-FloFan mounts quickly to tube rails and operates efficiently across a wide variety of crops and growing environments.

MultiFan V-FloFan Tube Bracket Specifications

The following specifications are sourced from manufacturer and distributor documentation for the Vostermans Ventilation MultiFan V-FloFan – Tube Bracket variant (SKU VOSFAN2100).

Specification	Value
Brand	Vostermans Ventilation
Product Line	MultiFan V-FloFan
Variant	Tube Bracket Mounting
Supplier SKU	VOSFAN2100
Airflow Direction	Vertical (downward to crop level)
Mounting Type	Tube bracket (greenhouse rail compatible)
Weight	5.0 lb
Intended Application	Greenhouse air circulation, humidity control
Crop Compatibility	Wide range of greenhouse crops
Power Cord	Not included for part numbers #737502 and #737504

Why Choose the Vostermans MultiFan V-FloFan

The V-FloFan is part of Vostermans Ventilation’s MultiFan line, a family of fans engineered specifically for commercial horticulture. Unlike general-purpose fans adapted for growing environments, the V-FloFan is purpose-built for greenhouse air management from the ground up. Here is what sets it apart:

• Vertical airflow to crop level: The V-FloFan’s vertical airflow pattern pushes air directly down to plant level, where it matters most. This creates a more uniform microclimate across the canopy compared to fans that move air horizontally along the perimeter of the space.
• Heat distribution optimization: In modern greenhouses, heat stratification is a persistent challenge — warm air rises and cool air settles, creating uneven growing conditions. The V-FloFan breaks up stratified air layers, helping to equalize temperatures throughout the growing area and supporting more consistent crop development.
• Humidity management: Stagnant humid air around foliage promotes fungal diseases and slows transpiration. By continuously moving air at crop level, the V-FloFan reduces the negative impacts of excess humidity without requiring additional humidity control equipment in all cases.
• Energy-efficient operation: The V-FloFan is designed to deliver effective air movement with low energy consumption, making it practical for continuous operation in production facilities where electricity costs accumulate over time.
• Easy installation and maintenance: The tube bracket mounting design allows the fan to be installed directly onto standard greenhouse tube rail infrastructure. The unit is also designed for straightforward maintenance, reducing downtime in active growing operations.

For growers managing large greenhouse bays or multi-tier growing structures, the ability to space multiple V-FloFan units along tube rails and achieve consistent air movement at canopy height is a practical operational advantage.

Best Uses for the Vostermans MultiFan V-FloFan

The V-FloFan with Tube Bracket is designed for growers working in structured greenhouse environments. The following use cases reflect the product’s design intent and the conditions described in the manufacturer documentation:

• Commercial greenhouse vegetable production: Row crops such as tomatoes, peppers, and cucumbers benefit from consistent air movement at canopy level. The V-FloFan’s vertical delivery pattern provides steady airflow across dense foliage without creating cold spots or damaging tender plant tissue.
• Cut flower and ornamental greenhouses: Humidity management is critical in flower production, where Botrytis and other fungal pathogens thrive in stagnant air. Positioning V-FloFan units along tube rails over flower benches keeps air moving at the level where disease pressure is highest.
• Leafy greens and herb production: In high-density growing systems for lettuce, basil, and similar crops, uniform temperature and humidity across all growing positions improves consistency. The V-FloFan helps eliminate the microclimatic variation that leads to uneven harvest quality in tightly packed growing spaces.
• Multi-span and gutter-connected greenhouses: Structures with multiple connected growing bays often have reduced natural ventilation in interior zones. Tube-mounted circulation fans like the V-FloFan supplement ridge vents and pad-and-fan systems by ensuring air movement in areas that passive ventilation does not reach effectively.
• Grow rooms with overhead tube infrastructure: Any growing environment with tube rail infrastructure — whether a traditional greenhouse or a purpose-built indoor facility — can accommodate the V-FloFan’s tube bracket mount. This makes it a flexible choice for operations transitioning between growing formats. If you also need complementary air movement equipment, the Active Air HD 18-inch pedestal fan is another option for supplemental circulation in larger spaces.

V-FloFan vs Similar Greenhouse Circulation Fans

When evaluating the V-FloFan, growers typically compare it against standard oscillating wall fans and inline duct fans. Understanding the differences helps in choosing the right equipment for the specific growing setup.

V-FloFan vs oscillating wall fans: Oscillating wall fans are commonly used in grow rooms and small greenhouses. They move air horizontally across the space and require repositioning or adjustment as crops grow taller. The V-FloFan delivers air vertically downward from above, which means it maintains consistent crop-level airflow regardless of plant height. Wall fans also require solid wall mounting points, which may not be available in all greenhouse structures, whereas the V-FloFan’s tube bracket allows placement anywhere along the tube rail network.

V-FloFan vs inline duct fans: Inline duct fans like those found in exhaust and intake ventilation systems are designed for moving air through ducting, not for creating circulation patterns within the growing space itself. They serve a different function — air exchange rather than air circulation. In most commercial greenhouse setups, both types of equipment are used together: inline fans handle fresh air intake and exhaust, while circulation fans like the V-FloFan maintain uniform conditions within the growing zone. If you need carbon filtration as part of an air management system, consider pairing this fan with a pre-filter on your intake or exhaust line.

V-FloFan vs standard box fans: Box fans are inexpensive but are not built for continuous agricultural use. They lack the durability ratings and purpose-designed airflow geometry that professional greenhouse equipment requires. The V-FloFan is engineered for the specific demands of crop production — including resistance to the high-humidity environments that would shorten the operating life of consumer-grade fans.

Compatibility

The MultiFan V-FloFan – Tube Bracket is compatible with standard greenhouse tube rail infrastructure. The tube bracket mount is the defining feature of this variant — it attaches to overhead tube rails typically found in Dutch Venlo-style and commercial gutter-connected greenhouse structures.

Greenhouse infrastructure: Compatible with standard round tube rails used in commercial greenhouse construction. Growers with older or non-standard tube dimensions should verify bracket compatibility with the tube diameter in their specific facility before ordering.

Power supply: Note that power cords are not included for part numbers #737502 and #737504. Verify the part number you are ordering and confirm your facility’s available cord configuration before purchase. Growers should consult the Vostermans documentation or their electrical contractor to confirm compatible cord sets.

Environmental suitability: The V-FloFan is designed for greenhouse environments, which include elevated humidity levels, condensation, and the chemical exposure common in horticultural production. Its construction is appropriate for these conditions as a purpose-built agricultural product.

Use alongside dehumidification equipment: The V-FloFan reduces humidity impacts at crop level through air movement, but it is not a substitute for active dehumidification in high-humidity climates or during high-transpiration periods. It works well alongside dehumidifiers; for replacement parts on dehumidification equipment in your facility, see the Ideal Air Pro Series dehumidifier replacement condensate pump as an example of complementary climate control accessories.

Usage Guidelines

The following guidelines reflect how the V-FloFan is intended to be used in greenhouse air management based on the manufacturer’s product description.

Fan placement and spacing: Position V-FloFan units along tube rails above the crop canopy to create overlapping zones of vertical airflow. The goal is to eliminate stagnant air pockets above and within the crop canopy. In wide greenhouse bays, multiple units spaced at regular intervals along the rail provide more uniform coverage than a single high-volume fan at one end of the structure.

Continuous vs intermittent operation: For humidity control and disease prevention, continuous low-speed operation is generally more effective than intermittent high-speed bursts. The V-FloFan is designed for energy-efficient continuous operation, which suits this strategy. In facilities using climate controllers, the fan can be connected to a timer or controller to match airflow to the production schedule.

Positioning relative to crop height: Because the V-FloFan delivers airflow vertically downward, the height of the fan above the canopy affects the spread and intensity of airflow at plant level. Position the fan high enough to cover a useful area, but not so high that the airflow dissipates before reaching the plants. Specific height recommendations should be obtained from Vostermans technical documentation for your facility’s bay width and crop type.

Monitoring outcomes: After installation, observe the crop canopy for signs of uneven moisture — wet or dry spots, localized wilting, or disease pressure in specific zones. These signs can indicate areas where airflow is insufficient or excessive, and fan positioning can be adjusted accordingly.

How to Install the V-FloFan Tube Bracket

1. Review the part number: Before installation, confirm whether your unit is part #737502 or #737504 (power cord not included) or another part number that includes a cord. If a cord is not included, source a compatible cord before beginning the installation.
2. Inspect the unit: Remove the fan from packaging and inspect the fan body, bracket hardware, and any included fasteners for shipping damage. Do not install a damaged unit.
3. Position along the tube rail: Identify the tube rail section where you intend to mount the fan. Consider the crop layout below and choose a position that will direct airflow over the target growing area.
4. Attach the tube bracket: Secure the tube bracket to the overhead rail according to the bracket design. Ensure the bracket is fully engaged on the tube and that all fasteners are tightened to prevent the fan from shifting or falling during operation.
5. Orient the fan: Position the fan body so airflow is directed vertically downward toward the crop canopy. The V-FloFan is designed for vertical airflow delivery — confirm the fan face is aimed downward at the appropriate angle.
6. Connect power: Route the power cord safely away from water sources and secure it to the greenhouse structure to prevent it from hanging loose. Plug into a grounded outlet appropriate for the fan’s rated voltage. If hardwiring, consult a qualified electrician.
7. Test operation: Power on the fan and verify it runs smoothly without vibration or unusual noise. Confirm airflow is reaching the intended zone of the crop canopy below.
8. Ongoing maintenance: Periodically inspect the bracket fasteners and fan body for loosening, corrosion, or debris accumulation. Clean the fan blades and housing as needed to maintain airflow efficiency. The V-FloFan is described as easy to maintain, but regular inspection is recommended in greenhouse environments where dust, pollen, and moisture can affect performance over time.

Sources & Further Reading