Optimal Filtration: This high-quality activated carbon filter offers superior air purification, effectively removing contaminants and odors from your 3D printing environment. Easy installation and a to maintain optimal printer performance. and Reliable: Constructed with premium materials, this filter is built to last, providing reliable filtration without frequent replacements. Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:activated carbon Package Contents: 2 * Activated Carbon Air 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.