I am trying to install Sellkirk flexible vent onto my water heater and I’m getting confused as to which end connects to the water heater and which end attaches to the existing vent pipe. The flexible pipe has two ends one of which is a male one of which is female but I don’t know which is which. One end has an inner and outer pipe and the other and only has one pipe. Which end of the pipe is female and whiether male or female attaches to the water heater. any help would be greatly appreciated. thanks Brian
Photos of each end are attached
Photos of each end are attached
