The TWO PACK OF A SINGLE FILTER. Output Microfilter EF17 is an original Electrolux product designed for use with vacuum cleaners. This white filter is compatible with Electrolux brand vacuums and specifically designed for the EF model. The kit includes one filter and is powered by electricity through a wired connection. It is suitable for Electrolux vacuum cleaners and is a genuine Electrolux product, ensuring a perfect fit and optimal performance for your cleaning needs.