It simply threads into existing breather port the breather then threads into the top of the stand pipe.
There are 3 ports as you can see on the side, 2 supply lines and 1 return.
The 2 holes in the last picture are, 1 for breather and 1 that connects to the return port.
Assembly measures as follows: 24" tubes, 1/2" pipe thread, 3-1/4" top = 28" total length.
Replacement Number: LG2-003 、LG2003
