dont buy this atomberg renesa fan the design concept is a failure being a expert myself who has 10 years of process engineering in motor manufacturing i can say this dc motor has worst rotor design the permanent magnets are just pasted with glue and they do not have any self locking mechanism and this leads to the magnet pop up during fan operation i bought three fans and all of these 3 fans noise issue due to magnet pop up and i have repeated issues too this fan is a garbage please do