AS1237 Alumina Airstone – 1 1/2" X 1 1/2" X 12" – 3/8" barb
AS950 Alumina Airstone – 1 1/2" X 1 1/2" X 9" – 1/2" NPT
AS337 Alumina Airstone – 1 1/2" X 1 1/2" X 3" – 3/8" barb
AS325 Alumina Airstone – 1 1/2" X 1 1/2" X 3" – 1/4" barb
AS15 Alumina Airstone – 1 1/2" X 1 1/2" X 1 1/2" – 3/16" barb
