The High Altitude Orifice Kit - LP 5001-8000 ft. by Rheem (Model SP20174D) is designed for optimal performance in high-altitude environments. This kit is essential for converting low-pressure gas appliances to operate efficiently at elevations between 5001 and 8000 feet. It includes precision-engineered orifices that ensure proper gas flow and combustion, enhancing safety and efficiency. The kit is compatible with various Rheem models and adheres to industry standards for quality and reliability. Ideal for residential and commercial applications, it helps maintain the performance of your gas appliances in challenging conditions.