Packing include: 12pcs foam filter.
Size: 35mm dia x 60mm depth x 15mm dia center hole
Fit for: Marina Slim Filters S10, S15 and S20 for the Marina Style 35, Marina Style 60, Marina Style 95 or Marina Style 160 aquarium.
Provides efficient water flow with less clogging for long lasting filtration.
Change every 3-4 weeks