Hayward Universal H350FD Negative Pressure Indoor Vent Adapter (UHXNEGVT13501) plugs A properly selected replacement helps

A properly selected replacement helps preserve the intended support and clamping function of the filter instead of forcing a makeshift substitute into a critical role

helping users adjust each feature without confusion

Supports mixed-size connections

and this Jacuzzi Cygnet 0

Ideal when the panel works but the overlay has aged badly

Hayward Universal H350FD Negative Pressure Indoor Vent Adapter (UHXNEGVT13501) plugs A properly selected replacement helpsThe Hayward indoor vent adapter is designed for compatible Universal H350FD heater applications where a negative pressure indoor vent setup needs the proper transition fitting. An adapter like this is useful because it helps establish a more complete connection between the heater and the venting system for indoor installations. This replacement is especially useful when the original adapter is missing, damaged, corroded, or no longer appropriate for