Bulk Pack: Our product includes 12 sets of paint booth filters. Under normal use, replacement is recommended every 2-3 months. One pack can last almost two years, meeting your daily needs. Double-layer Design: We utilize a double-layer fiberglass material for the airbrush booth filter, increasing the filtering surface area for higher adsorption capacity and better filtering effects, making your workspace safer. Excellent Material: Our airbrush spray booth filter is made of high-quality fiberglass, soft, not easily deformed, with a longer lifespan to reduce replacement frequency, lower internal cleaning times, and maintenance costs. The appropriate density can intercept and purify particles equal to or larger than PM2.5, ensuring fresher indoor air. Suitable Size: fitting well with spray booth filter openings. It can also be cut into other required sizes for various purposes. Compatibility: The paint booth filter is for Master/Paasche/Sky Enterprise/Airhobby and other products; please verify the model before purchase. Our filter cotton also works well for aquarium filtration, fan filtration, and other similar needs. Spray Booth Not Included. It's for Display Purpose Only Colour:Blue & White Material:glass fiber Size:40.5x18.5x3cm Package Contents: 12 * Paint Booth Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.