I bought Usha’s 1200 mm sealing fan 4 months ago. I took it from Usha store in 2000 rupees. I put it on the roof of the front room. It is very good and its build quality is very good but its speed is not so good. Its speed is very low so that the entire room does not reach all the space in the air. Which brings great success in the summer. I was unhappy with the purpose I took it. With the speed decreasing, these voices also do a lot, thereby causing a lot of problems in the night. I have a lot of trouble about it.