Part Number: 3MIX7
eFireplaceStore Item Number: MFB-3MIX7
*Venting Requirements: This unit requires venting pipe with an inner diameter of 3 Inches. Please see the Venting Components section on this page for venting pipe that must be used with this unit.
Part of Metal-Fab's versatile Type B line, this Metal-Fab 3 Inch to 7 Inch Type B Chimney Pipe Increaser is exactly what you need if you want to increase your round vent diameter from three to seven inches.