LTWHOME Large Square Foam Filter Compatible with Zoo Med's 501 External Filter (Pack of 6) Change every 3 to 6

Change every 3 to 6 months

Provide a large surface area for trapping particulate debris and enhances biological filtration

Custom designed and manufactured for Eheim Aqua Compact 40 / 62

ensure the filtration system operates at optimum performance

Contain 5 replacement foam filter rings

LTWHOME Large Square Foam Filter Compatible with Zoo Med's 501 External Filter (Pack of 6) Change every 3 to 6Pack include: 6pcs. Size: 13. 38 inches by length, 3. 94 inches by width, 2. 17 inches by height. This filter pads is custom designed and manufactured for Zoo Med's 501 External Filter. Provides efficient water flow with less clogging for long lasting filtration.