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This specific model is engineered for clockwise (CW) rotation
ensuring the unit works within the original design parameters
With a high electrical rating of 15A and 1/4" NPT sample line connections
Supports proper combustion air movement and flue gas exhaust
Modine 5H0547510025 Orifice L99H008 This specific model is engineeredThe Modine 5H0547510025 Orifice is a critical OEM replacement part designed for Natural Gas unit heaters. Engineered for precision gas flow regulation, this main burner orifice ensures the correct stoichiometric ratio for efficient combustion in power vented and gravity vented systems. As a veteran grade component, it provides the exact BTU input required to maintain factory spec manifold pressure. This orifice is compatible with several high output