LTWHOME Compatible Carbon Foam Filters Non-Branded But Suitable for Fluval U2 Filter (Pack of 200)Approx size: 130mm x 60mm x 8mm These carbon filter pads are intended as an alternative to the poly carbon cartridge, and offer excellent chemical carbon filtration in the aquarium. There is no poly side to these filters. They are just Activated Carbon impregnated foam. After market product,Not Hagen FLUVAL genuine FOAM Provides efficient water flow with less clogging for long lasting filtration

Package inclued: 50 PCS Poly pads

Package Include: 12pcs ( Save 8% if buy 2 lots or more)

3pcs fine foam filter

Package Include: 12PCS ( 6L & 6R)

Biopower 160 200 240

Custom designed and manufactured for Fluval FX5 filtration systems

Approx size:150 mm diameter x 30 mm thickness

Approx size: 235mm x 64mm x 17mm

Change every 2-3 weeks

Blue foam side captures large particles

Provides efficient water flow with less clogging for long lasting filtration

They are just Activated Carbon impregnated foam