Replace your HotBox Filter as needed. We recommend at least monthly. 

Key Features:

• Triple-layer design for superior filtration
• Carbon filter & carbon fiber pellets for effective odor control
• HEPA filter removes fine particles for cleaner, healthier air
• Compact size: 3” deep, 4” x 4” square
• Ideal for use in portable air purifiers, home ventilation systems, and confined spaces