|| 3/4" x 1/2"
|| Female & Male
INSTALL one or more No.1 Air Eliminators at the end of the short main or the main running to the warm side of the building. Install two or three No.1 Air Eliminators at the end of the long main or main running to the cold side of the building. Use a No.2 Air Eliminator 3/8" or 3/4" vertical connection.