Made to fit most Aladdin lamps made before 2006.
You can easily tell which chimney you need by looking at the top of the burner unit. If the unit has spring loaded "fingers" that hold the chimney, the "Heelless Chimney" is the correct unit and you'll need instead #6350. If, on the other hand, the burner top is flat and has indents to lock on the chimney, you need this "Lox-On" Chimney.
Any question, we'll be happy to help you get the right one for your lamp.