The ANS Brass Air Divider L 12-way manifold splits air flow into 12 outlets, so you can install multiple air stones and aeration devices with a single source of air input. 

Each outlet has its own shut-off valves and barbed hose connection, which gives you the flexibility to control air flow into each of your air stones and aeration devices.

The ANS Brass Air Divider is designed to split air flow from your air pump to air stones, and other aeration devices for your pond or aquarium. The manifold comes with shut off valves and barbed hose connections.