Abstract: A mould assembly for a skimmer box lid includes a mould including a floor and a sidewall extending from the floor, the floor and sidewall defining a mould cavity into which a settable material can be introduced. The floor defines at least one aperture. The assembly includes at least one mould insert having a tubular body that is configured for attachment to the floor to extend from the floor to a height that is at least substantially equivalent to a height of the sidewall, the tubular body defining an elongate passage to be in register with a respective aperture such that, when the settable material is introduced into the mould cavity and subsequently sets, the mould body, the, or each, mould insert, and the settable material form the skimmer box lid with the, or each, passage extending through the skimmer box lid so that a suitable tool can be used to lift the skimmer box lid.

Abstract: A mould for a skimmer box lid includes a mould body having a floor and a sidewall extending from the floor. The sidewall defines a side of a mould cavity in which a settable material can be received. A slot member projects from the floor and into the mould cavity. The slot member defines a passage with a transverse cross-section that is elongate and has a width of less than 10 mm.