Pro 6" Rigid Caster

The PolarCool Pro 6" Rigid Caster (Part No. 6422-6021) is a direct-replacement wheel designed for PolarCool 36" Pro portable evaporative air coolers. Built with solid rubber construction, this flat-free rigid caster delivers reliable mobility across all types of terrain — from smooth warehouse floors to rough outdoor surfaces — making it ideal for warehouse cooling, outdoor cooling systems, and industrial air coolers that require frequent repositioning. Key Features 6" solid rubber rigid caster: no flats, no air required. Designed specifically for PolarCool 36" Pro models (the Pro uses two swivel and two rigid casters). Includes (1) rigid caster and all hardware specific to the 36" Pro. Durable construction withstands heavy loads and rough terrain in industrial and outdoor environments. Large wheel diameter provides smooth rolling and easy maneuverability for heavy-duty evaporative coolers. Compatible with other PolarCool replacement parts for coolers and cooling accessories. Benefit