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The next task was to actually build the thing. I cut the needed wood pieces, assembled a basic box and attached two cleats on the inside bottom of the interior walls. The cleats are used to support a removable screen that will be used in turn to support and contain the activated charcoal filtration medium. I attached two smaller cleats to support a removable plywood wall that separates the two halves (chambers) of the unit. Next I cut the wall that separates the chambers from a piece of plywood and into this I cut a baffle at the bottom to allow for air flow.
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