This is a complete replacement midi jet assembly with a chrome cover for a PH pools whirlpool system. The hole size in the bath should be 21mm The outer diameter of the white jet cover is 40mm and the internal diameter of the eyeball is 10mm. The outer diameter of the water pipe is 32mm and air pipe connection on top has an 11mm outer diameter as well as a 5mm internal diameter.
Sold as complete jet with venturi.
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