Selkirk 103018 Round Gas Vent Pipe, 3 x 18

Highlights:

• Size: 3 x 18
• OD = ID + 1/2
• Installed length 1-1/2 less than listed length
• Aluminum inner wall. galvanized outer wall
• For gravity draft venting of LP or natural gas appliances
• 100 million BTU/hr. max. 500 degree max.
• Not for wall furnaces
• provides for permanent insulation
• Requires 1 clearance to combustible surfaces
• Easy to assemble and can be combined to obtain the required installation height
• Boxed