4" x 6-5/8" directvent pro co-linear direct vent masonry chimney conversion kit with 3" x 30' flex and prairie cap style use when installing a direct vent co-linear insert into a masonry chimney.

Kit includes: prairie termination cap, and two pieces of aluminum flex lengths - one red (exhaust), and one green (air intake).

See chart for diameters and lengths.

Directvent pro features tight inner connections for superb performance, with no gaskets or sealants required (unless specified by the appliance manufacturer).

Low-profile locks and no hems or beads allow for a beautiful product that looks elegant in any interior.

Directvent pro is a unitized, coaxial venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces.

Features: cap style: prairie red exhaust flex: 3" x 30' green air intake flex: 3" x 30' looking for simpson dura-vent?

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Simpson dura-vent has changed their name to duravent.

Duravent is a recognized technological leader in the venting industry.

Consistently the first to market with new innovations in venting systems, duravent has captured a leadership position in emerging markets.

Duravent has patents for several products and continues to design safe and technologically advanced venting.

The company's research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for pelletvent pro.

Scientifically proven materials and unequalled engineering make duravent products not only the best choice, or safest choice, but the only choice for professional quality venting products.

DuraVent 46DVA-CL33P 4 Inch x 6-5/8 Inch DirectVent Pro Collection