DuraVent FasNSeal Flex 4" x 155' Stainless Steel Custom Flex Length d34 The BRT4000 ships smooth faced

The BRT4000 ships smooth faced and include hidden screen pockets

MBBTAMS1 Series Name

Does not require (but is stronger with) heat curing

Item Number OPT-IFPSS42FSEN-NG UPC Code 196111447541 Manufacturer The Outdoor Plus Brand Name The Outdoor Plus Material Stainless Steel Collection Isla Finish Stainless Steel Shape Round Fuel Type Natural Gas Ignition Flame Sense with Spark Ignition Hides Propane Tank Yes

DuraVent FasNSeal Flex 4" x 155' Stainless Steel Custom Flex Length d34 The BRT4000 ships smooth facedMade 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