The Aquatune Magnum Waterco Fulflo Tri Series 134 replacement cartridge filters are made in New Zealand and are of the highest quality. Usually supplied as a set of 3 the single cartridge is 794mm in length, 155mm diameter and has a hole of 50mm. The replacement cartridge filters for the 134 have the same dimensions as the tri series 167 and can be easily upgraded, providing increased filtration.