Vent Size
Inner Pipe	4"
Outer Pipe	6 5/8"

DuraVent DirectVent Pro Prairie Cap Co-linear Kit Aluminum Flex Lengths Direct Vent Pipe For Gas Fireplaces & Gas Stoves | 46DVA-CL33P |

Use when installing a direct vent co-linear insert into a masonry chimney.

Kit includes: Choice of High-Wind Termination Cap or Prairie Termination Cap; and two pieces of Aluminum Flex lengths - one Red (exhaust), and one Green (air intake). See chart for diameters and lengths.