DuraVent FasNSeal Flex 12" x 140' Stainless Steel Custom Flex Length extension-kit Model 051321 Flue Size 13"

Model 051321 Flue Size 13" x 21" Size Width: 11" - 13

Please Note: Picture Shown Boulevard 72-inch Direct-Vent Linear Fireplace with Black Glass Liner

Compatible Fireplace Insert DRI2032

Item Number OPT-UCTDR108PB-LP UPC Code 196111193264 Manufacturer The Outdoor Plus Brand Name The Outdoor Plus Material Hardieboard & Steel Frame Shape Rectangular Fuel Type Liquid Propane Ignition Match Lit Ignition Hides Propane Tank Yes Burner Material 304 Stainless Steel Burning Area 84” x 10” Product Category Ready to Finish Fire Pit Certification LC Certified Width 108" Height 15" Depth 28" Documents & Files

DuraVent FasNSeal Flex 12" x 140' Stainless Steel Custom Flex Length extension-kit Model 051321 Flue Size 13"Made from super ferritic stainless steel. Corrosion resistant. Manufactured with a sure seal locking seam for superior strength and flexibility. The smooth inner wall provides for no output reduction, allowing for full appliance efficiency, ease of cleaning and regular maintenance. The smooth inner wall optimizes gas flow, minimizes back pressure, and facilitates condensate management. Only flexible chimney liner listed to UL 1738 standard. What's