Bulk Pack: This product includes 12 sets of paint booth filters. Replacement is recommended every 23 months under normal use. One pack can last up to nearly two years, meeting your long-term filtration needs. Double-layer Design: Features a double-layer fiberglass material that increases the filtering surface area, enhancing adsorption capacity and filtration efficiency for improved air quality in your workspace. Excellent Material: Made from high-quality fiberglass, the filter is soft, resistant to deformation, and designed for a longer lifespan, reducing the frequency of replacements and minimizing maintenance efforts. The optimal density effectively captures particles equal to or larger than PM2.5, helping maintain cleaner indoor air. Suitable Size: Designed to fit standard booth filter openings. Can be trimmed to custom sizes for added versatility. Compatibility: Compatible with Master, Paasche, Enterprise, Airhobby, and other similar models. Please confirm your model before purchasing. This filter material is also suitable for use in aquarium filtration, fan filtration, and other similar air filtering applications. Note: Booth is not included. For display purposes only. Color: Blue & White Material: Glass fiber Size: 40.5 x 18.5 x 3 cm Package Contents: 12 x Paint Booth Filter Note: The package includes only the items listed above. Other products are not included. Lighting and monitor differences may cause slight variations in color between the image and the actual item. Measurement may vary by 13 cm.