Duravent, 4Dv48dw, Type B, 4 Inch Duraconnect Ii, Vent Pipe, Flex Pipe Length,Aluminum Duraconnect Ii Collection Aluminum 48 Inch Double-Wall Flex Connector With 4 Inch Inner Diameter This Aluminum 48 Inch Double-Wall Flex Connector With 4 Inch Inner Diameter From The Duraconnect Ii Series Is A Type B Gas Component And Consists Of The Duralock System For A Tight Seal. Use As A Connector System To Replace Rigid Gas Vent With A Flexible Section. Duraconnect Ii Can Be Used When Type B Gas Vent Double-Wall Connector Is Required. Not To Be Enclosed And Cannot Penetrate Through Walls, Floors, Or Ceilings. Twist-Lock Connectors On Each End. Features: Fuel Type: Gas, Liquid Propane - Inner Diameter: 4 - Length: 48 - Double Wall Construction - Ul Listed - Duraconnect Iis Heavy-Duty Construction Features Precision Twist Lock Connection, Which Provides Ease Of Assembly Or Disassembly Without Damage To The Product. The Double-Wall Flexible Vent Is Certified As Having The Equivalent Thermal Properties As Type B Gas Vent And Can Be Used When A Type B Gas Vent Double-Wall Connector Is Required. Double-Wall Connector Pipe, Ul Approved As A Type B Gas Vent Segment, For Use In Conditioned And Unconditioned Attics And Crawl Spaces. (Not To Be Enclosed And Cannot Penetrate Through Walls, Floors, Or Ceilings.) Duravents Duraconnect Ii Is Known As The Contractors Choice For Its Ease Of Installation And Durability. Looking For Simpson Dura-Vent? You Found It! 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.
I red some subdivision about DuraVent 4DV48DW 4 Inner Diameter - DuraConnect II Type B Gas Vent - Double Wal from marker DuraVent and seems to be very well made.