Our standard installation for under 20kW air-cooled generators. GenSpring Power was the first generator dealer to use 6x6 treated timbers to ensure a stable and level base for generator installation. The basic frame is 4 x 5 and is filled with pea gravel.  The generator then sits on the pea gravel foundation ensuring a level foundation.  The advantage for the homeowner is a quality installation, generator above any ground surface water, and a clean environment for your generator system.