Hayward Universal H200FD Negative Pressure Indoor Vent Adapter (UHXNEGVT12001) kingtechnology a focused replacement like this

a focused replacement like this can be one of the most practical ways to restore the original feel

Raypak stack adapter

It is a practical service option when restoring heater performance in a compatible Cal Spas system means keeping the original boxed assembly format

or producing intermittent readings that disrupt normal heater behavior

Helps automate recurring daily schedules in compatible systems

Hayward Universal H200FD Negative Pressure Indoor Vent Adapter (UHXNEGVT12001) kingtechnology a focused replacement like thisThe Hayward indoor vent adapter is designed for compatible Universal H200FD heater applications where a negative pressure indoor vent system needs the proper transition fitting. An adapter like this is useful because it helps connect the heater to the venting system in a way that supports a cleaner and more appropriate installation. This replacement is especially useful when the original adapter is damaged, missing, or not suited to the intended vent