The Hayward UHXNEGVT13508 Indoor Vent Adapter is an essential component for proper ventilation and installation of Hayward heaters. This vent adapter kit is designed to be used under negative pressure, which means that the air flow will be directed upwards through the roof in a vertical direction. This type of ventilation is important for maintaining optimal air quality and safety in indoor spaces.

• Used under negative pressure which is thru-roof vertically.
• The Hayward heaters require 1 square inch per 1,000 BTU of fresh air and combustion air supply.
• Respect setbacks on each side of the heater when installed shed.
• The last digit in the part code represents the diameter of the venting.
• Model - H350FD
• Type - Neg. Pressure
• Genuine Hayward Vent Adapter.

Fitment guidelines:
For use with Hayward Universal H-Series Low Nox Gas Heater

Additional information:
Replaces - 389730, UHXNEGVT13501