Perfectly viable substitute for the more expensive fridge filter, & an absolute bargain with good delivery times, I can't comment on the longevity of the filter as its the 1st time I've used them however even if both only last as long as 1 samsung 1 then ur still getting urself an absolute bargain!!
I had bought about 6 some time last year and 4 worked well with no problem until I tried using the last two. They were defective (leaving particles in the water), but I put this down to the possibility I had them for too long. I bought another two new ones and both had the same problem. I then purchased one more from another seller, but still the same problem persisted. In the end I have had to go for a more expensive Samsung model before getting what I wanted. I therefore wasted money on three of this brand and certainly won't bother with it again.
bought these two filters the first worked no problems, the second one developed a leak after a few weeks and it was not detected and so it flooded the area that it was installed in. Tried to repair it to get me over Xmas but could not seal the leak, in the end had to bypass it until new units arrived.