If it is a standard 10 inch cannister any ten inch filter shoudl fit itou can get them at Lowes or CW. It has a seal at each in or rubber washer. It doesn't matter which end is up or down.
Lowes sell ten inch shole house cannister filters that are simply media for sediment, least expensive and a couple of intermediate levels. Thye have a charcoal, silver, and media wrapped 25 micron filter also that gets the sediment and chlorine and a bunch of nasties. It cost the most. Perhaps the first filter with simple media to get th bulk of sediments and the charcoal in the second. Change out the first when it loaded and the seocn perhaps two or three filter changes down the road depending on the amount of water though the system and load of sediment etc. Or the good filter primary and a up to or down to .5 micron ceramic secondary filter that will get all the bugs. They cost more and the only place I've seen the standard ten inch ceramic filters, is on the net. they can get right pricey.