About Us
Advantec was established in 1998 by David McGrath and Allan
Pearce, to provide sales and marketing support to David’s
agricultural company, Sustainable Agricultural Machinery
Developments (SAM).
David is the inventor and manufacturer of the Permanent Raised
Bed Management System which won him the Land newspaper Inventor of
the Year at the Australian National Field Days in 1990.
David is also the inventor of the “original” DraftStoppa®, but
it was put on the backburner until the drought hit rural Australia
and as a part of a diversification of product lines, it was decided
to fast track the development.
The DraftStoppa® is a self-seal casing for exhaust fans
containing a patented mechanism with balanced flaps which open when
the fan is on and close under their own weight when the fan is
turned off. As well as preventing hot or cold air from entering the
home, the DraftStoppa® also keeps out vermin, dust and odours while
reducing energy costs.
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