Internal Spacing Bends Provide Uniform Insulating Air Space Between The Pipe Walls
Die-Formed Ends Provide Uniform Sizing For Strong, Easy-To-Connect Joints
Lock Tab Feature Helps Installers To Engage The Tab Without Sheet Metal Screws
Designed For Use On Approved Gas Appliances In Residential, Light-Commercial And Industrial Applications
Tested And Listed Per UL 441 For Installation In Single- And Multi-Story Buildings In Accordance With National Fire Protection Association Standards NFPA 54 And NFPA 211
