Selkirk 184036 Round Gas Vent Pipe, 4 x 3′

Highlights:

• Size: 4 x 3′
• Type B gas vent
• 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
• Boxed