Fanlight Catch shelf brackets it will prevent the latch

it will prevent the latch bar from rising

available in five beautiful lacquered finishes: Aged Brass

Supplied with threaded studs & locking nuts

For measurements of the lever action flush bolts

Fanlight Catch shelf brackets it will prevent the latchA fanlight catch is designed for bottom hung fanlight windows and any out of reach windows that need to be operated with a traditional pole hook. The fastener catch is also suitable for fitting to loft hatches and cupboard doors. This fanlight window fastener is made from quality solid brass and available in six distinct finishes. There is a finish for every style of interior, from traditional aged brass, to the more modern look of polished chrome.