Features: brand new and high quality Made of high quality material, it features good flame retardant, high density and excellent stability. High toughness and elastic properties make you easy to removal and wash. Help to keep your PC and its components clean and protect your computer from overheating. Minimizes the noise from the fan and extend the life-span of your fan. Easy to install and remove. Suitable for computer for case fan with optional size. Dust Filters only, other accessories demo in the picture is not included! Specifications: Item Type: Dust Filters Material: PVC Optional Size: 12x12cm/4.7x4.7in 14x14cm/5.51x5.51in 9X9cm/3.54x3.54in 8X8cm/3.15x3.15in 7X7cm/2.75x2.75in Color: Black Quantity: 5pcs/set Package Includes: 5 PCS x Dust Filters note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!