Watthour WECO 2350R PB010007 3-Channel Driver PC Board BB021605 Large Heatsink

Watthour Engineering WECO 2350R PC Board w/ Large Heatsink. P/N PB010007, BB021605. 

This appears to be a 3-channel driver of some sort, with 4 power ICs mated to a ~1.5lb aluminum heatsink. 

Heatsink may have a couple bent fins and is a bit dusty. 

Weight is ~2lbs.