This Vax air purifier 300 has hardly been used, as you can tell from the filter. It comes boxed and with a remote control and can be seen working. Buyer collects from Malvern. Box Dimensions 78 x 38 x 36 cms. Weight 8.5 kg. This is Vax's top of the range solution to indoor air pollution for asthma, hay fever & allergy sufferers. It removes up to 99% of potentially harmful airborne pollutants, allergens and bacteria from the air stream removing particles from the air as small as 0.3 microns, helping to reduce the effect of allergies, asthma and hay fever. It has Smart Sensor Technology that monitors the quality of air in your home and when needed, it adjusts the filtration speed to help maintain air quality. This machine includes speed settings, sleep mode and a filter change reminder. It has a quiet night time mode for clean air and a peaceful sleep. and is suitable for roooms up to 120 square metres. It is approved by Asthma UK. It retails on Amazon for £279.99 so thi is £100 cheaper and virtually unused.