Round 24V Complete Roof Ventilation Kit – 850 m³/h Intake and Extraction
Complete electric roof ventilation kit for trucks, commercial vehicles, service vans and trailers with a 24V electrical system. The G&C Round 24V Complete Kit combines a powerful electric roof ventilator with the essential components for installation, electrical connection and a professional interior finish.
The round 24V roof ventilator delivers up to 850 m³/h airflow with an electrical power rating of 80 W. Its reversible motor allows both active fresh-air intake and extraction of warm, humid and stale air from the vehicle.
The included electrical connection kit with 3-position switch allows selection between air intake, off and extraction. The kit also includes a custom-made grey PVC interior grille, insect and snow filter, Ø129 mm floor vent, MS polymer sealant and installation materials.
Complete 24V vehicle ventilation solution:
850 m³/h airflow, reversible intake and extraction, including 3-position switch, electrical connection kit, Ø129 mm floor vent, interior grille, filter, foam padding, sealing components and mounting hardware.
Key benefits
- 850 m³/h airflow: powerful active ventilation for load compartments and vehicle interiors.
- 24V electric operation: designed for vehicles with a compatible 24V electrical system.
- Intake and extraction: reversible airflow for fresh-air supply or air extraction.
- 3-position switch included: select intake, off or extraction.
- Complete connection kit: includes materials for the electrical installation.
- Ø129 mm floor vent: provides an additional opening for air exchange.
- Custom-made grey PVC interior grille: with pre-positioned mounting holes.
- Insect and snow filter: helps prevent insects, snow and unwanted particles from entering.
- Soft foam padding: for finishing the space between the vehicle roof and headliner.
- MS polymer sealant and mounting hardware: included for professional installation.
- Classic round design: available in white and black.
What's included in the kit?
- 1× G&C Round 24V electric roof ventilator, white or black depending on the selected version
- 1× Mounting ring with rubber seal
- 1× Insect and snow filter
- 1× Complete electrical connection kit with polarity-reversing 3-position switch (part no. 8000.101)
- 1× Custom-made grey PVC interior grille with pre-positioned mounting holes
- 1× Round floor vent Ø129 mm
- 1× Tube of MS polymer sealant
- 1× Soft foam padding for finishing the roof-to-headliner gap
- 1× Set of mounting hardware for approximately 1–3 mm roof sheet thickness
- 1× Installation manual
- 1× Drilling and cutting template
Please note: a fan speed controller is not included as standard. A suitable 24V speed controller can be purchased separately. Additional mounting components may be required for heavily profiled or unusual vehicle roof constructions.
Technical specifications
- Brand: G&C Systems
- Model: Round 24V Complete Roof Ventilation Kit
- Type: electric round roof ventilator
- Operating voltage: 24V DC
- Electrical power: 80 W
- Maximum airflow: 850 m³/h
- Airflow directions: intake and extraction
- Controls: included polarity-reversing 3-position switch
- Speed control: optional with a suitable 24V controller
- Outer cover diameter: approximately 320 mm
- External build-up height: approximately 62 mm
- Colour: white or black, depending on the version
- Interior grille: custom-made grey PVC
- Floor vent: round, Ø129 mm
- Filter: insect and snow filter
- Installation sealing: rubber seal and MS polymer sealant
- Interior finishing: soft foam padding
- Mounting hardware: for approximately 1–3 mm roof sheet thickness
- Roof opening: according to the supplied drilling and cutting template and installation manual
- Application: vehicles with a suitable 24V electrical system
Air intake and extraction with the 3-position switch
The Round 24V roof ventilator operates in two directions, allowing ventilation to be adjusted to the requirements of the vehicle.
- Position 1 – Intake: actively draws outdoor air into the vehicle.
- Position 0 – Off: switches the ventilator off.
- Position 2 – Extraction: removes warm, humid and stale air through the roof.
The supplied connection kit includes the switch for reversing the airflow direction. If adjustable fan speed is required, a suitable 24V speed controller can be added separately. The speed controller does not replace the reversing switch.
Important: switch the ventilator off before changing its rotation direction.
Why combine roof ventilation with a floor vent?
Effective ventilation requires suitable openings for both air supply and extraction. The Round 24V roof ventilator actively moves air through the vehicle roof.
The included passive Ø129 mm floor vent provides an additional opening in the vehicle floor. Together, these components support practical air exchange throughout the load compartment or interior.
Actual airflow depends on fan direction, installation position, vehicle layout and other available ventilation openings.
Professional interior finish
The kit includes a custom-made grey PVC interior grille with pre-positioned mounting holes designed to match the round roof ventilator.
The soft foam padding can be used to finish the space between the metal vehicle roof and the headliner, creating a neat transition to the interior grille.
Installing the Round 24V Complete Kit
- Select suitable positions for the roof ventilator and floor vent.
- Inspect the roof and vehicle floor for reinforcements, wiring, pipes and obstacles.
- Mark the roof cut-out using the supplied drilling and cutting template.
- Prepare the openings and protect exposed metal edges against corrosion.
- Install the mounting ring and rubber seal according to the instructions.
- Secure the roof ventilator using the supplied hardware on a suitable roof structure.
- Apply the included MS polymer sealant as specified in the installation instructions.
- Install the Ø129 mm floor vent in an appropriate location.
- Fit the soft foam padding and grey PVC interior grille.
- Connect the ventilator and 3-position switch to a correctly protected 24V circuit using the supplied connection kit.
- Test the intake, off and extraction functions.
- Check the mounting security and watertight sealing.
Installation tip: the included mounting hardware is intended for approximately 1–3 mm roof sheet thickness. Thick, insulated or ribbed roofs may require a suitable mounting adapter or different fixings.
Vehicle applications
- Trucks with a 24V electrical system
- Heavy commercial vans and utility vehicles with 24V power
- Service vehicles and mobile workshops
- Trailers with a suitable 24V power supply
- Special-purpose vehicles requiring active air intake or extraction
Additional legal ventilation requirements may apply when transporting gas cylinders or hazardous goods. Always check the regulations for the complete ventilation system.
Frequently asked questions
What is the difference between the Round 24V BASIC and Complete Kit?
The BASIC version contains the roof ventilator, mounting ring and rubber seal. The Complete Kit additionally includes the electrical connection kit, 3-position switch, floor vent, interior grille, filter, foam padding, sealant and mounting hardware.
What is the airflow capacity?
The Round 24V ventilator delivers up to 850 m³/h.
Can it provide both intake and extraction?
Yes. The included 3-position switch allows selection between intake, off and extraction.
Is a speed controller included?
No. A suitable 24V speed controller can be added separately.
Are sealant and mounting hardware included?
Yes. Both are standard components of this kit.
Does the kit include a floor vent?
Yes. A round passive Ø129 mm floor vent is included.
Can I use this kit with a 12V electrical system?
No. This version requires 24V. A separate Round 12V Complete Kit is available for 12V vehicles.
Order the Round 24V Complete Roof Ventilation Kit from Vanworx
Choose a complete 24V vehicle ventilation solution with 850 m³/h airflow, reversible intake and extraction, electrical connection kit, Ø129 mm floor vent, filter, interior grille and mounting materials. Available with a white or black round roof ventilator.
