I am building a new home and want to put PVC duct under the concrete slab.
My installer doesn't want to do it, but will let me do it myself. He has drawn
a modified perimeter duct plan. Only source for PVC duct/fittings I can find is
General Plastics "Black Max" which has to be purchased through a distributor.
Does anyone know of other brands or sources available to the DIY'er?
Sizes he has prescribed run from 14" to 5"; also need plenum, collars, L's, Y's,
register boots. Have been told I can use PVC irrigation pipe for ducting w/
Black Max fittings. Is this true? Any help would be greatly appreciated.