A motor cooling filter that is suitable for 912 model dust extractors. Mirka dust extractors are designed to achieve dust-free sanding in combination with our electric and pneumatic sanders, vacuum hand blocks and sanding arms. Our dust extraction solutions will keep your environment clean and healthy. All Mirka vacuum cleaners are equipped with an automatic start function which saves the user time and energy. Always combine Mirka dust extractors with Mirka antistatic hoses.