Dimensions of the product are 27x19cm (measured manually, with a possible error of ±5cm). Each unit weighs 45g. Please note that the disposable dust bag should be replaced when it is 2/3 full, as the non-woven fabric has a strong adsorption capability. It is advisable to keep it in the packaging box before use. This product is compatible with Vorwerk VK135, VK136, KOBOLD135, KOBOLD136, VK369, FP135, FP136, and other household vacuum cleaners.