The Coolspool Hybrid 300 is a 28V DC, Tier 4 emission compliant 3-cylinder diesel engine powered GPU, designed for use in aircraft hangars, congested ramps and busy gate areas where space is limited. Regional and commuter operators with frequent turn-rounds, and FBOs requiring continuous DC power for avionics in the hangar, or power for starting on the ramp, will appreciate the compactness and versatility of this Powervamp ground power unit.