Wanted Under-gravel filters

Looking for ug filters for 30cm, 60cm and 1m tank, preferably with lift tubes and piping. Since they not very popular these days I'm struggling to find them in local fish shops.

 

Hi they cheap try aquatic warehouse in plumstead sams also have

 

Thanks Yazeed, I've only been to shops in the West coast region thus far, will do another trip this weekend