The Shark NeverChange Air Purifier Max uses the longest-lasting filter of all Shark air purifiers. When powered at Max fan speed for 12 hours per day in a 300 sq. ft. room, Shark says the filter ...

5. Tiger Shark Tiger sharks have a bite force of 325 pounds per square inch (psi), making them one of the shark species with the strongest bite. These terrifying sharks grow to 18 feet long and weigh ...