Breathe Fresh, Live Fresh! 🌬️ Change filters in seconds—no tools required! Experience cleaner air with every breath. Perfectly fits SC2 machines for hassle-free use. We're here for you—reach out anytime! Stay on top of your health with bi-annual replacements. Compatible Quality 6-Month Replacement Easy Installation The Filter Replacement Kit for SC2 includes 4 high-quality cartridge filters and 4 check valves, designed for easy installation and optimal performance. Recommended for replacement every 6 months, this kit ensures your SC2 machine operates at peak efficiency, providing you with clean and fresh air effortlessly.