Maximum Lamp Spacing (MS):

\[ MS = Cf \cdot MH \]

Where:

• \(MS\) is the maximum lamp spacing in feet (ft).
• \(Cf\) is the lamp coefficient (0.9 for Direct RLM with louvers, 1.0 for direct RLM 2-40 watts, and 1.2 for indirect-glass, plastic, metal).
• \(MH\) is the lamp height in feet (ft).