RETURN AIR ADAPTER TO 18" DUCT

RETURN AIR ADAPTER TO 18" DUCT FOR HEATING MODULE; FOR USE WITH M3642V2 , M3642CL1-X, M3642CL1-H AND MH3660 SYSTEMS, DIMS: H-17", W-38", D-2", WEIGHT: 9LBS, MFG BOX, MADE IN USA