Hatch ventilator identification

Yes thanks Paul. Thing is it’s advertised as a deck ventilator. I can’t find any specification/sizes for the inner hole that it would fit.
Says 99mm hole size in the spiel.

If you measure yours and then contact marinestore I'm sure that they will measure one for you to confirm size - as long as it's in stock.
 
Yes thanks Paul. Thing is it’s advertised as a deck ventilator. I can’t find any specification/sizes for the inner hole that it would fit.
You're not looking hard enough ;)

It's in the description: Deck ventilator stainless steel. : 200mm. Height above deck: 60mm. Hole size 99mm Up to 50mm deck thickness.
 
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