LTWHOME AEO19055 Round Large Filter Sponge Fit for Zoo Med's 501 External Filter (Pack of 12) WASHABLE HEPA Filters Designed for

WASHABLE HEPA Filters Designed for Hoover Bagless Uprights with Twin Chamber System Such as Windtunnel

Custom designed and manufactured for vac-sweep pool cleaner hose tail

Fine foam captures microscopic dust and debris

Custom Designed and Manufactured for The Juwel Standard / Bioflow 6

has an off centre hole cut out (3

LTWHOME AEO19055 Round Large Filter Sponge Fit for Zoo Med's 501 External Filter (Pack of 12) WASHABLE HEPA Filters Designed forPackage include: 12pcs. Size: 3. 94 inches by height,2. 20 inches by diameter; inner hole diameter: 0. 39 inches. 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.