This acoustically lined duct is intended for SpacePak high-velocity systems and comes in 10 ft lengths and is used to connect the return air box to the high-velocity air handler.
This return air air duct connects the SpacePak SPC-1D (BM-9149) return air box (Sold separately, please click on the Accessories tab at the top of the product page.) to your high-velocity air handler.
This return air duct works with the following SpacePak High-Velocity Air Handlers:
For more information, visit www.SpacePak.com.