Very good filter for 9 3/4 devices. It is a thread along with activated carbon. It eliminates chlorine and improves water quality

I bought it because there was no other filter in the size of 7 by 5m at that moment. It doesn't have a rubber on top and bottom like the others, and it doesn't have a good water application. The water smells like chlorine, just like in the bathroom where there is no filter. I left it for a month hoping it would inflate and seal, but nothing, it's the worst thing I've ever put.