Cartridge filter housings can be delivered in stainless steel (Aisi 304 and 316), polypropylene and in PVDF, depending on application, temperature etc.
The standard housings are available in a lot of executions. The smallest housing for a 1 x 10" filter cartridge up to 120 x 40" cartridges for the largest housing.
A large choice of filter cartridges in material and micron rating makes this is a cheap solution for many applications.