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Filter: $16.99 Sumk pre-filter: https://amzn.to/3bd95Pu
Filter $15.99 Xtechnor: https://amzn.to/2VInXzW
This filter helps stop light and heavy debris from entering the cars cabin filter intake.

From MFG: Best Part to keep filter life longer- XTechnor Tesla Model 3 Air Intake Filters is Customed fit for 2017 2018 2019 Tesla model 3 exterior accessories frunk air inlet cover. UPGRADED PROTECTION- Unlike the other intake grille, XTechnor carbon air inlet vent cover can keep leaves or small stuff from clogging up and block impurities, fall into the AC intake system. Even prevents harmful fine particles and dust from entering the vehicle cabin while keeping clean and healthy environment to passengers.
Apply High Quality Air Filter: (1)Fine fiber filter paper and small molecular material, with dust collection and filtration effect; (2)High-performance activated carbon strongly adsorbs odors and harmful gases in the air; (3)A melt blown electrostatic layer is added to trap fine particles by electrostatic charge.
ONE STEP TO INSTALL- It is easy to Install, take off the original air conditioning air intake grille cover, and just place the air intake filters to there without any tools.