Anti-vibration couplers are used to limit the transfer of pump vibration to the pipework for a quieter and smoother operation that won't keep the family up if you decide for a late night shower.
Please note: this product is compatible with: RP75PT/RP100PT/RP50TU/RP75TU/RP100TU/RP55SU/RP80SU/RP120SU