Mine came as a single plastic box that both batteries fit into. The dealer sourced the box as it was part of the purchase. It's vented with a single hose just like the stock battery box. Sorry, I don't know where they got it.
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2010 3150RL
LevelUp, Dual 6 volt batteries, Progressive Industries EMS HW50C, Honda EU2000i Generator, Bridgestone Duravis R250 tires, Torklift Glowstep Revolution Stairs, LED Tail lights
2015 RAM 3500 Laramie SRW LB CC Cummins 6.7L Aisin Trans B&W RVK3600
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