Replace old conservatory air vent

[PeskyWabbit]

Hi all, I have a very old conservatory that I'm planning on replacing one day soon. The outside cover of an old air vent got blown off in the storms last night and is now lost to the world. Of course now the vent is leaking water as there is no outside cover. I'd like to replace this with a cheap solution that will passively vent but also block rainwater, I reckon this structure will be temporary so don't want to waste money. What should I be looking for, I've tried searching online but got quickly baffled.

I reckon the original hole is roughly 100mm diameter but will know exactly when I dismantle the exisiting - I just want to know what type of vent I should be looking at.

 

[noseall]

Hi all, I have a very old conservatory that I'm planning on replacing one day soon. The outside cover of an old air vent got blown off in the storms last night and is now lost to the world. Of course now the vent is leaking water as there is no outside cover. I'd like to replace this with a cheap solution that will passively vent but also block rainwater, I reckon this structure will be temporary so don't want to waste money. What should I be looking for, I've tried searching online but got quickly baffled.

I reckon the original hole is roughly 100mm diameter but will know exactly when I dismantle the exisiting - I just want to know what type of vent I should be looking at.

Is it actually doing anything more than say a trickle vent or an open window would do?

 

[PeskyWabbit]

Is it actually doing anything more than say a trickle vent or an open window would do?

No, this hasn't been working since I bought the place so passive venting like a trickle.

 

[noseall]

No, this hasn't been working since I bought the place so passive venting like a trickle.

Glue a plastic blanking plate into it.

 

[PeskyWabbit]

cheap solution that will passively vent but also block rainwater

Blanking plate will only meet 2 of the 3 requirements. What kind of vent type should I be searching for?