Air-Cooled Fuel Cell Stack is constructed for durability.

Optimized for extended lifetime expectancy, FCgen™-1020ACS clean energy fuel cell stack features robust membrane electrode assembly frame and dynamic response. Stack features air-cooled architecture that helps simplify system design and

[source: http://news.thomasnet.com/fullstory/Air-Cooled-Fuel-Cell-Stack-is-constructed-for-durability-20006863]