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Markel Products Co. 42297-001 Duct Heater Limit 210°F is a high-temperature safety limit control designed to protect electric duct heaters from overheating. Installed within HVAC duct heating systems, it monitors air temperature and automatically interrupts power if temperatures exceed 210°F, preventing equipment damage and reducing fire risk. Commonly used in commercial and industrial air handling units, rooftop units, and electric furnace applications, this limit control enhances system reliability, ensures code compliance, extends heater lifespan, and supports safe, efficient operation in forced-air heating environments.

For an efficient and reliable HVAC system, the Markel Products Duct Heater Limit is a great choice for optimal system performance.

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