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Dantherm Flexibox 810 with hood
Dantherm Flexibox 810 with hood

Flexibox 810-900

Free cooling

Free cooling is cost-effective controlled ventilation – the telecom shelter or enclosure is cooled by means of ambient air without a compressor. Dantherm’s Free Air Cooling unit, the Flexibox, provides total heat management and significant energy savings on cooling in telecom sites hosting GSM, UMTS or LTE networks.


The Flexibox 900 offers cost-effective and controlled free-cooling ventilation. The solution cools by means of ambient air without using a compressor, generating significant savings in all climates.

The unit comes standard with the Dantherm-developed CC 3000 cooling controller, which allows for settings configuration and live operation monitoring on any standard browser.

The Flexibox 900 can be used as a stand-alone unit or in combination with e.g. existing air-conditioning. This ensures maximum use of passive cooling, prolongs the air-conditioner service life and generates significant OPEX savings.

These units are very suitable for retrofitting into existing systems. The return on investment for the retrofit is achieved especially quickly in base stations, where comfort air-conditioning units run 24/7.

Key features

  • Extremely energy-efficient – savings in all types of climates
  • Total heat management – control of multiple external units
  • Stable operation – stepless fan speed control
  • Clean internal environment – overpressure system
  • Extended air path protection – Dantherm AirMaze
  • Flexible installation – with variants for indoor and outdoor use
  • Low maintenance costs – long-life compact filter
  • Maximum security – remote monitoring and configuration
  • Integrated CC 3000 control system for FB 900 units

Product specifications

Operating temperature range

-25 to +55

Maximum cooling capacity at 25°C ambient, Δt = 10°C, 100%


Air flow – maximum


Input voltage range

48VDC (42-57VDC)

Power consumption 50/80/100%


Sound level, 50/80% @ 3m


Communication interface

Ethernet SNMP



Product size outdoor (h x w x d)

758 x 503 x 500

Product size indoor (h x w x d)

666 x 455 x 472

Net weight

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Featured insights

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