Duravent 4" x 6-5/8" DirectVent Pro 3x4 Co-Linear Reline Kit AL Flex | 46DVA-CL34KFB

DirectVent Pro Flex Horizontal Cap Kit from Duravent Use when installing a direct vent co-linear insert into an existing factory-built chimney. Red Flex Exhaust 4" x 35' - Air Intake 3" x 35'. Kit includes: High-wind termination Cap, 2 pieces of Aluminum Flex Lengths, and 4 Hose Clamps Choose from the following Flex Lengths: 4" x 6-5/8" Diameter 46DVA-CL33KFB (3 x 3) 46DVA-CL34KFB (3 x 4) About the Duravent DirectVent Pro System DirectVent Pro features tight inner connections for superb performance, with no gaskets or sealants required (unless specified by the appliance manufacturer). All black pipe lengths, pipe extensions, and elbows feature laser-welded outer wall seams for a sleek finish. Low-profile locks and no hems or beads allow for a beautiful product that looks elegant in any interior.  DuraVent's direct vent is specified by nearly every major stove and fireplace manufacturer in the U.S. and Canada, with the largest choice of termination caps for direct vents available. Applications DirectVent Pro is a unitized, coaxial (concentric) venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces. Materials and Construction .020” aluminum inner wall. .018” galvanized steel outer wall. Painted outer walls made of laserwelded .018” galvalume steel. Caps also available in stainless steel and copper. Outer pipe brings combustion air to the appliance. Inner pipe exhausts flue gases to the outside. Gaskets or sealants not required (unless specified by the appliance manufacturer). Clearances Specified by the appliance manufacturer. Diameters 4” x 6 5⁄8” and 5” x 8”. Listings DirectVent Pro, in combination with the gas appliance, has been tested and listed as a decorative gas appliance system or as a direct vent heater system by a major testing agency, such as UL, CSA, or Warnock Hersey. Check with your appliance manufacturer for approval.