The Oxygen Pools OXY30A-BV-N is a AG Ozonator for pools less than 30,000 gallons with a manifold installs onto any type of filter without special tools. Using the existing pool pump, water is circulated through the generator which adds dynamic oxygen to the water as it circulates back to the pool. System dimensions: 24″L x 18″W. Weight: 12lb. 1.5 inch pvc manifold. Use reducer bushing for 2 inch pvc installation.