KB651B & KB651S Thin Fans

The KB651B and KB651S thin fans deliver 350 CFM of airflow in an extremely compact design, making them ideal for space-limited applications where traditional fan assemblies cannot fit. These versatile units can be configured for either pressurization or exhaust operation, adapting to diverse ventilation requirements across industrial cooling and climate control systems.

Both models feature rugged construction with a durable baked powder finish that resists corrosion and wear in demanding environments. The fans are equipped with UL/CSA Recognized ball-bearing motors available in permanent split capacitor or shaded pole configurations, each incorporating automatic-reset thermal overload protection to safeguard against motor damage from sustained overheating. Kooltronic's design ensures low temperature rise through integrated motor cooling, where intake air from the blower itself cools the motor windings for extended service life. Special permanent lubricants formulated to perform across a wide temperature range from -20F to 250F enable reliable operation in both hot and cold applications.

Electrical connections are simplified with 12-inch power and ground leads for straightforward installation. All motors carry UL Recognition and a Declaration of Conformity to applicable CE Standards, meeting international safety and compliance requirements. A complete line of accessories is available to customize mounting, ducting, and operational configurations for specific site needs.