The 4″ Filter Media Cup adapter slides onto the Filter Media Cup to accommodate C shaped filter sock holders or those with slightly larger diameter holders. They will not fit Trigger Systems Sumps with an oval-shaped sock holder.
- Dimensions: 3.5″ Inside Diameter, 4.6″ Outside diameter
- Color: Sea Foam White
- Material: 100% Virgin BPA free Polypropylene (typically used in Tupperware). Material Certs. are available upon request.
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