Perfect CompatibilityThe replacement hepa filter is specially developed to be compatible with iRobot Roomba Combo J7+ plus / Combo j5+ / Combo j5 / Combo j9+ robot vacuum cleaners. Only for Combo j series models, please double check your model number before ordering. (For Combo J series only)(***Not for Roomba i7 i7+ J7 j7+ Plus i3 i3+ i2 i2+ i1 i1+ i4 i6 i6+ i8 i8+ E5 E6 E7, EVO, E I and J series***)Please note: This is not an OEM product. Any use of brand name or model name is intended only to demonstrate the compatibility of this product. [Value Pack] This package comes with 5 pieces of high quality robot vacuum filters. This is an affordable alternative to refilling your robot vacuum with replacement HEPA filters. EASY TO INSTALL] The filters are a perfect fit and install the same way as the original parts, making them easy to install and easy to use. Superior Performance] The newest version of the HEPA filter has a higher filtration capacity, filtering up to 99.9% of dirt, pollen, small dust particles and substances. It is recommended to change the filter every 1-2 months to effectively prevent dust from entering the engine and extend the life of the robot vacuum cleaner. High-quality materials] The filters are made of high-quality environmentally friendly materials, which will not cause any pollution to the environment. And they also have excellent processing technology. The HEPA filters are designed with rounded corners to avoid hurting your hands.