Co-Linear Masonry Chimney Kit [Includes: Top-Plate Flashing, High-Wind Vertical Cap [Aluminum], & Two 25' x 3" Aluminum Flex Liners], 4" x 6 5/8" Diameter, DirectVent - 46DVA-CL33-25

46DVA-CL33-25 is a co-linear venting kit with flex pipe. This kit includes 25 feet of 3 inch exhaust flex, 25 feet of 3 inch air intake flex and a high wind termination cap. The inner diameter dimension is 4 inches by 6-5/8 inches. This is an OEM DuraVent venting kit.