Features:OOTDTY No other tools needed, easy to intall and remove.Helps protect dust cleaner from dirt that causes damage.This filter is specifically designed to purify the most of air conditioning.Easy to replace and disposable-, no tools required. Replace every 6 months for optimal- performance.4 standard for your option: 23x23cm/30x30cm/45x150cm/45X250cm.Specifications: Material: polyesterThickness: approx 5mmSize: approx 23x23cm/30x30cm/45x150cm/45X250cm(optional)Package Includes: 10xAir Conditioner Filter with Magic-hook( 23x23cm/30x30cmOr1x Air Conditioner Filter with Magic-hook(45x150cm/45X250cm)Note: Please allow 1-3cm error due to manual measurement. please 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.