Lennox 25W74 Manifold 321142-301 The NEMA 4X rating indicates

The NEMA 4X rating indicates the coil housing is protected against windblown dust

and light oil for diverse industrial applications

Fail-Safe Reliability: Mechanical spring return ensures a normally closed safety state during power interruptions

Resilient Construction: Built with high-quality cast iron

The inclusion of a 5/8-inch connector ensures compatibility with specific York and Guardian air handlers and cased coils

Lennox 25W74 Manifold 321142-301 The NEMA 4X rating indicatesThe Lennox 25W74 Gas Manifold (OEM part number 100795 01) is a precision engineered gas distribution component designed for high efficiency residential and light commercial furnace burners. As a critical point of regulation, this manifold ensures localized gas pressure is balanced across all burner tubes, facilitating consistent ignition and optimal combustion cycles. Built with heavy duty materials to withstand thermal stress and pressure