Features: 99% Dust & Particle Filtration A reinforced 4-layer stack (40 mm G4 ×2 + 50 mm HEPA ×2) built to filter dust, smoke, and fine particles from long print jobs. Filters up to 99% so you can keep printing in a cleaner, safer space. 1200-Hour Lifespan with Smart Reminder Stop worrying about constant swaps — this filter runs up to 1200 hours with 99% PM2.5 efficiency, keeping your setup protected even during marathon prints. When it’s time, the Air Purifier Max will automatically light up to remind you, so you’ll never forget to replace the filter. Reminder: Actual filter lifespan may vary depending on printing conditions and smoke concentration. 1-Second Clean SwapThe slide-in design allows you to swap filters in just 1 second. Maintenance is effortless — no dirty hands, no dust clouds from built-up particles. Stay focused on printing without the extra mess. Specs: Compatibility: Phrozen Air Purifier Max Size: 200 x 218 x 220mm Weight: 905g