duct starts at 8x18, goes 5 ft before an 8x18 elbow
then the run reduces down in a soffit, to what, not sure..
run might be 15' long.. 2 bedrooms, 12x12 are at the end
of this run and are colder than the rest of the house..
what can I do to warm these rooms up?
would like to add something in the furnace room at 8x18 duct
before the elbow.. any suggestions?