Quote Originally Posted by Deacon View Post
It's basically the same filter, except the type of connections on either end of the filter are different, depending on how you want to handle your filtering process.

The in-line has hose barbs on each end, while the squeeze had threaded connectors. Go to the REI website. They have the best photos of each.
My squeeze came with the screw-in attachment to connect it to the hose of a bladder, thus making it also an in-line filter. It's really all in your preference; do you want a squeeze and inline, or just the inline filter? I am not sure of the weight difference.