6-Pack, Size B, Rite-Size Cartridge Refills

These are all standard products function as expected

It sit and works perfectly

These fit perfectly and the price is great

JUST WHAT I NEEDED

Filter (2) in box torn, charcoal leak in tank.

Great Product

Great price works great

I like my filter that why I buy it its cheaper then store

Exactly what I needed for our fish filter.

They fit in the fish tank