Blue Sea Systems 4217 Square Format Label Set – 120 is a Blue Sea Systems electrical panel built for switch labeling, lockout, and finishing details. Designed for marine environments, it supports reliable performance, clean installation, and long service life in demanding onboard electrical systems.
4217 Square Format Label Set 120 Black DC labels 120 common DC labels Reinforced, weatherproof material Used on WeatherDeck Waterproof Panels Used on Battery Management Panels Used on 360 Panel System .
Key specs: Color: Black.
Ideal for builders, refit projects, and serious boat owners who want marine-grade electrical hardware from a trusted brand.












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