Hi folks!
When I bought my Y60 I tried to find salon air filter but manuals said that there is no any filter for incoming air. In traffic jam air is the worst so I started searching the analog variants and now I would like to show you what I found. May be it will be useful for someone.
PS. Someone use coal filter paper.
1. 2 plastic frames with metal net to avoid paper bending. Using paper for cooking top air extraction system.
2. Polyurethane foam as hermetic.
3. Broken frame of heater and air cond system.
4. Fitted DIY filter with 2 self-drilling screws.