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.

Benefits

• Restores mobility and maneuverability to portable evaporative air coolers and swamp coolers.
• Solid rubber design eliminates downtime from flat tires and air loss.
• Handles all types of terrain: concrete, asphalt, gravel, dirt, and uneven surfaces — for versatile deployment.
• Reduces maintenance effort with long-lasting, low-maintenance caster construction.
• Supports safe, efficient repositioning of high-velocity fans and heavy-duty evaporative coolers in warehouses, job sites, and outdoor cooling applications.

Applications

• The 36" Pro uses two swivel casters and two rigid casters: order accordingly for complete replacement.
• Casters for other 36" models are available under SKU 6450-6051.
• Verify your model before ordering to ensure proper fit and compatibility.
• Follow manufacturer installation guidelines for secure mounting and safe operation.

Why Choose

This Caster For facility managers, maintenance teams, and operators of portable evaporative air coolers, the PolarCool Pro 6" Rigid Caster (6422-6021) offers a rugged, flat-free solution that restores mobility, reduces maintenance, and supports efficient operation across diverse warehouse, industrial, and outdoor cooling environments.

Key Features

Genuine PolarCool replacement component Built for durability and reliable cooling performance Designed for easy installation

Compatibility

36 Pro