Features: 1High Efficiency Filter: The high efficiency filter effectively reduces odors and removes common contaminants pet dander hair dust and large objects such as some pollen. 2Replace Filter: Please replace the filter once a quarter to keep the machine clean. High efficiency cotton filter to ensure the normal operation of the machine filtration system. 3Applicable Models: With wide range of application front filter element fit for DC19 DC20 DC21 DC29 and back filter screen fit for DC08 05 04. 4Manufacturing Material: Made of high quality silicone and high efficiency particulate air materials feel comfortable lightweight portable and anti slip. 5Simple Operation: Simple to operate easy to use easy to install and disassemble. Without any difficult requirements even though you use it for the first time. Specification: Item Type: Front and Back Motor Filter KitWeight: Approx.175g / 6.2ozMaterial: Silicone + High Efficiency Particulate AirProduct Size: Approx.15.4 x 2.7cm / 6.1 x 1.1inApplicable Models: Front filter element fit for DC19 DC20 DC21 DC29 back filter screen fit for DC08 05 04 Package List: 1 x FrontFilterElement1 x Back Filter Screen Note: Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.