Volta Hepa Exhaust Filter. Genuine Part No. EF32.Hepa exhaust filter for Volta Gemini U4502 & Campus U4700 model.Also fits Tornado TO4560, TO4565, TO4570, Electrolux Z4520, Z4590.Dimensions 123mm X 99mm X 28.5mm.We have been supplying appliance parts to the trade and retail for over 25 years. Buy with confidence.