The vertical sides of the electrical housing equipment are provided with screened vents to allow cooling air flow circulation and prevent ingress of water spray. On the inside, each vent hole is shielded by a plate (63) fixed at a small distance from the wall by a solid, channel shaped support (64). This support is open at the top to give a slit (65) through which air can enter or leave the inside of the housing. The vents are normally placed near the top and bottom of the vertical walls to assist in natural air circulation. The housing can be used for control equipment for air pumps used to agitate water in special baths.
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