Amazon 'SupaGard' nominal rated filter cartridges.

Double-open-end style to fit '28 series' or similar plastic housings, or stainless housings with tie-rod.

10-inch and 20-inch long cartridges are listed here in a range of micron ratings, but other sizes 30- and 40-inch are available - please ask for details and pricing

There is a large range of other cartridge types, sizes, micron ratings, and end-fitting styles available on request - please CONTACT US

INFO SHEETS HERE ,  HERE  and HERE

Amazon Filters website HERE

Delivery time normally 1 to 21 days