Spec Sheet
Inner Ring Spec Sheet
Blog
Ductmate’s ECONOflange System is also available for Double Wall Spiral Pipe in standard sizes from 10” to 72” for 1” Insulation (2” increments) and from 16” to 72” for 2” Insulation (2” increments).
Available as a one piece system with the Inner Ring factory welded to the outer Flange, or as a two piece system with the inner Ring separate from the outer flange. The installation of the Double Wall system is similar to Single Wall. The Inner Ring of the ECONOflange Double Wall System is slightly longer than the outer Flange. Please specify Welded or Split Rings.
