I purchased some Italian made plastic hatches which look similar excepting they have 2 levers to lock in position.
Unfortunately there is no visible manufacturer's name on mine.

You can also get these with a keyed lock if in need of extra security.

Can't remember where I bought at the time,but look at Whitworths or McIntyre Marine-Pretty sure it was either of these outlets.
Overall quality and the castings is very good.

CR.

CoolRunnings said..
I purchased some Italian made plastic hatches which look similar excepting they have 2 levers to lock in position.
Unfortunately there is no visible manufacturer's name on mine.

You can also get these with a keyed lock if in need of extra security.

Can't remember where I bought at the time,but look at Whitworths or McIntyre Marine-Pretty sure it was either of these outlets.
Overall quality and the castings is very good.

CR.

Thank you, I have tried Whitworths but will give McIntyre a go........