UPC-04-3642 - Return Air Duct , R-4.2, 18" D x 10 ft.

This is an acoustical R4.2 flex duct for the M3642 return air; 18" diameter and 10' long

 

Unico Model	3642
Model Series	M-Series, V-Series, iSeries, U-Series
Duct Size	18"
Matching Duct Type	Return Air Duct
Duct Shape	Round
Material	Multiple
Flex or Rigid Duct	Flexible
R-Value	R4.2
Brand	Unico
Duct OD	20.5"
Duct Length	10 ft.