... rating:25-1250Construction:welded or sewnCollar type: steel ring or plastic collarSewn method: five-thread flat lock DescriptionHL FILTER adds a ... ,125, 150,200,250P1SP2SP3SP4SS-SewnW-WeldedS-Stainless SteelZ-Zinc-pleatedP-Plastic PE/PPS-SewnW-Welded25,50,75,80,100,125,150 ...