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This unit combines the regular UFO with an integral stainless steel mushroom-style ventilator. It can be closed to be watertight using the inside twist knob. When opened, the UFO2 ensures constant ventilation, while remaining rain and splash-proof.
• High gloss 316 stainless steel cover
• Mushroom ventilator has integral mosquito netting
• Nominal ID: 2-1/2"; deck cut-out size is 72mm (2-7/8"); free flow area is 4.93 in²