For information about this product, please use this link to Contact Us.

DW12X20TO16DWSQRNDADP2ASY-2R-S-NS
Double Wall Duct - 12" X 20" To 16" SQ2RND Adapter - 2 Layers Reduced Clearance - 16" X 24" To 20" Stainless Steel Outer Shell. Non Standard part 2 Week Lead Time.