The KIT-ASSY HI-ALT BURNER NAT PDX265T (FVIR) from Bradford White Corporation is a high-altitude natural gas burner assembly designed for the PDX265T model. This kit includes all necessary components for installation, ensuring compliance with FVIR (Flame Venting Ignition Resistance) standards. It is engineered to operate efficiently at higher elevations, providing reliable performance in challenging conditions. Ideal for residential water heating, this burner assembly enhances safety and efficiency, making it a vital component for your water heating system.