- Greater air delivery is allowed through
the larger perforated open area.
- 20” half-round design offers 30% more
cross-section area than conventional 12” tubing for much greater capacity.
- Installs quickly and easily.
- Unique arch design allows ducts to
be nested in a compact pile – requires only 1/5 the storage space of round duct.
- 20” Green Arch available solid or perforated.
- For use with pressure aeration only.
Not for suction systems.
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