About this item

• Replacement Part: Designed to fit models BH400, 45i, B4-Pure and FL400. Please verify your device model before ordering to confirm proper fit
• 1 Pack Set: Package contains one replacement parts. Replace every 9–12 months based on your local air condition and usage frequency
• Simple Installation: Tool-free direct replacement. Easy to take out and install. Aftermarket compatible part, not original equipment
• Quality Checked: Each part undergoes quality inspection. Contact our customer support promptly if you receive damaged items or have fitment questions