High air velocity duct board having minimal turbulence
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United States of America Patent
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Jul 21, 1998
Issued Date -
N/A
app pub date -
Nov 21, 1996
filing date -
Aug 11, 1993
priority date (Note) -
Expired
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Abstract
A rigid fiber glass duct board for air ducts in which the air contacting surface is a mat facing formed from a saturated polyester/glass mat which presents a smooth surface to flowing air and hence avoids surface degradation at very high air velocities. A method of forming such a board is also disclosed.
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