Anyone
Know what size return plenum box / coffin box should be used for a first co 3 ton
Variable speed air handler. The size of the return duct has a 4 ton capacity.
Thank you
Know what size return plenum box / coffin box should be used for a first co 3 ton
Variable speed air handler. The size of the return duct has a 4 ton capacity.
Thank you
source https://hvac-talk.com/vbb/threads/2242747-Return-plenum-box-dimensions?goto=newpost
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