Hayward 350K Negative Pressure Indoor Vent Adapter Vacuum head HH1320 The silver panel fits on

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

Pentair 590119Z

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

while the 25-pound bag suits regular maintenance without frequent repurchases

and LXG-W series fixtures and lamps

Hayward 350K Negative Pressure Indoor Vent Adapter Vacuum head HH1320 The silver panel fits onHayward 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