Graf

Water from the filter is fed into the tank via the Calming Inlet to prevent swirling of the water, disturbance of fine sediments and to introduce oxygen at the bottom of the tank. This device also helps prevent mosquitoes.

Graf EcoBloc Primary Modules are used with Baseplates, End Plates and Connectors to assemble a modular rainwater retention and detention system.

The Graf EcoBloc Vent Pipe provides a shielded opening for air to enter and exit as water flows through the system. Size: 21.5" long with a 4" connection