I've never seen one in my life like that. :D
I'm not sure it would make your engine go bang but wouldn't want to see it in my engine bay I think it looks ugly is my honest opinion. I take it it's an Air filter ? Anything like that is also advised to get it mapped when fitting. Not that I would myself but have known a few people just put them on without a remapped, but would rather be safe then sorry with my cars.