The Lennox 99W88 (103631-01) is a factory-original gas manifold designed for use in select Lennox gas furnace systems. This manifold is responsible for distributing natural gas or LP gas evenly to each burner tube, ensuring stable combustion and consistent heating output.Key Specifications:

• OEM Part Numbers: 99W88, 103631-01
• Application: Gas furnace burner assembly
• Gas Type: Compatible with Natural Gas or LP (check system requirements)
• Material: Heavy-duty steel construction with corrosion-resistant coating
• Ports: Multi-port configuration designed to align with OEM burner tubes
• Pressure Rating: Suitable for typical manifold pressures of 3.5" W.C. (natural gas) or 10" W.C. (LP)
• Mounting: Pre-drilled brackets for secure fitment within the burner compartment
• Dimensions: Precision-formed to match Lennox combustion chamber layout (model-specific)
• Certifications: Meets OEM safety and performance standards

Compatibility:
Used in specific Lennox high-efficiency gas furnace models. Verify with unit model number for proper fit.Genuine Lennox part – available at Beenimax.com for fast, reliable service and support.