Hayward 350K Negative Pressure Indoor Vent Adapter Vacuum head HH1320 Our pool and spa filters

Our pool and spa filters cartridges are trade certified and designed to have a longer service life with less maintenance

Made for System 3 modular filters (including S8M500 and Sta-Rite models)

this jet face fits standard cluster jets to deliver a balanced

The silver panel fits on the left side opposite the right (D) panel for easy identification and quick replacement

high-flow cleaning performance

Hayward 350K Negative Pressure Indoor Vent Adapter Vacuum head HH1320 Our pool and spa filtersHayward 350K Negative Pressure Indoor Vent Adapter The Hayward 350K Negative Pressure Indoor Vent Adapter is engineered to enable safe, code compliant indoor venting for Hayward heaters when negative pressure exhaust is required. It integrates with Hayward indoor vent kits and uses the standard 8" top diameter shared by all indoor venting applications. For site planning, refer to the heaters Table 2, which outlines available indoor venting kits and