why you should step up to Metal Ductwork! Metal fittings are designed
for woodworking applications; provide superior airflow and allow
convenient connections. Metal ductwork is safer - it is self-grounding.
It is smoother inside than corrugated metal or flexible hose
and provides less air resistance. It is far more efficient at
the wye, elbow, and branch fittings than available plastic equivalents.
Metal pipe is less expensive than PVC in diameters over 4"
and has a much larger variety of adapters available.