Usha Crisp Air 5 Blade (250mm) Exhaust Fan (Pack of 6) Price starts at Rs. 8,048. The lowest price of Usha Crisp Air 5 Blade (250mm) Exhaust Fan (Pack of 6) is at Flipkart. Usha Crisp Air 5 Blade (250mm) Exhaust Fan (Pack of 6) is not available in other online stores.