What this called?

[breeze1470]

Hi all , can someone tell me from the attached pic what these are called? Its the furthest one in the photo supplied,just it has a slight crack in it and would like to replace it

 

[Beardy]

Roof vents or skylights. (There may be other names)

 

[breeze1470]

thanks v.much

 

[Martin_E]

Or dome

 

[Beachball]

+1 Roof vent and sky light

 

[Mel]

If it is one with two handles on the inside and you push it vertically upwards to open, then it is called an MPK roof light.
Mel

 

[audiorob]

Looks like an older version that was in two parts - important to know the dimensions of the cut out to find one that fits - that will be a one-piece cover.