After seeing a few bad reviews about fitting the filter seems like a few having trouble, so here goes.. on installation of new filter you remove the clips red blue In many cases when you remove the clip then before you start tugging on the pipe push the grey collar down this releases the pipe so it pulls out with ease. To put the pipe back on the new filter simply push firmly back into the filter until it stops and replace the clip.

Water filter does what it says on the tin. Like others I really struggled to remove the old unit, until I discovered what when you've removed the (red in my case) retaining clip, you need to push the grey collet INTO the filter as you remove the pipe, to release it. Just pulling on the pipe will only make the collet grip harder and will potentially stretch the pipe.

On youtube I was able to determine that the flow goes from the bottom of the unit to the top (with the samsung logo towards the top). However it is ridiculous that after several years on the market, this is STILL being sold without any flow direction marking, either on the label or the unit itself.