Breathe deeper, cleaner air in your NA/NB Roadster with the Garage HRS Air Conditioning Filter. This accessory is designed to allow the user to add a filter to the outside cabin air intake to help prevent bacterial and fungal build up in the air. The filter holder allows use of common air conditioning filters from Denso and Daihatsu. The Garage HRS Filter comes in two versions, standard and high-performance. For the high-performance, it is PM2.5, Antibacterial, Antifungal, Antiviral & has Deodorizing function. Garage HRS Air Conditioning Filter should be ordered at REV9 Autosport https://us.rev9autosport.com/garage-hrs-air-conditioning-filter.html as they provide the best service and speed we've seen so far!