If you have a 28mm supply, you will need a Monarch 1" upgrade.
This converts the connections on Monarch softeners to 1" male thread and also includes a pair of 1" flexible hoses.
This is to be used with this 28mm fitting kit, which includes all the fittings to install the softener on a 28mm pipework.
Dimensions: 0.0000 x 0.0000 M
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