The "Jr" in the Spirovent Jr Air Eliminators means that these units are designed for residential or light commercial jobs. There is nothing junior about its power, or its quality. Spirovent Juniors come with a 20 year warranty and are made of solid brass and are able to remove up to 99.6% of the free air within your system.
Air eliminators and Spirotherm air eliminators can be found at www.supplyhouse.com