[DETAIL] Compatible with: DX3, DX4, DX4S, Supreme M3, Apollo, Apolloa Plus, Primal, Neptune, Neptune Plus, H50, Advantage Plus (old) High-Quality Performance: Our ultra fine filter 9991422-R4 is meticulously designed to deliver exceptional filtration results. Versatile and Efficient: Suitable for a wide range of applications, this filter can effectively capture even the smallest particles, providing maximum protection against airborne contaminants. Easy Installation: Designed for hassle-free setup, our ultra fine filter 9991422-R4 can be quickly installed without the need for any special tools or professional assistance. Long-Lasting Durability: Crafted from top-quality materials, this filter is built to withstand prolonged use, ensuring it remains effective and reliable over time. [ATTRIBUTES] - Material: PVC - Hign-concerned Chemical: None - Vacuum Part Type: Filters - Material: PVC - Hign-concerned Chemical: None - Vacuum Part Type: Filters - Model Number: Neptune Plus, H50 - Origin: Mainland China - Type: Vacuum Cleaner Parts