DETAILS
                
              
          DESCRIPTION
Round gas vent double wall construction with it's built-in air space, provides permanent insulation and keeps the inner pipe hot and outer relatively cool.
Highlights:
- Size: 4"
 - Type B gas vent
 - OD = ID + 1/2"
 - Inner wall aluminum alloy, outer wall galvanized
 - Closes off bottom of tee
 - For gravity draft venting of "listed" LP or natural gas burning appliances
 - 100 million BTU per hr., 500 degree F max.
 - Not for wall furnaces
 - Boxed
 
                    
                    
                



