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- Test Plug, Knockout, Series: 881, 4 in Pipe, Plastic, Domestic
- Standard knockout test plugs solvent weld into PVC or ABS SCH 40 pipe
- Dual fit knockout test caps solvent weld over 1-1/2 in and 2 in, or 3 in and 4 in PVC or ABS SCH 40 pipe
- Domestic / ImportDomesticMaterialPlasticPipe Size4 inManufacturerSioux ChiefManufacturer #881-4Series881TypeKnockout