Exhaust fans suck - that is their job.  An unsealed exhaust fan is basically a large hole in your ceiling with a tiny propeller attached. The problem is that, without a cover, they keep letting air move through even when they are switched off.  Warm air escapes in winter, and hot roof-space air can push back in during summer. 

DraftStoppa sits above your fan and works automatically. Its gravity-operated wings open when the fan is running, then close when it stops.  No switches or power needed.  It just quietly gets on with the job. 

Make that hole in your ceiling behave:
🔥 Keeps valuable warmth in winter        ❄️ Blocks hot attic air in summer
🌬️ Stops unwanted air leakage                🪰 Stops dust, insects, roof smell 

Why smart homeowners choose the original Australian made DraftStoppa:
✅ Opens and closes automatically
✅ Easy DIY installation on standard exhaust fans
✅ No running costs and no ongoing maintenance
✅ Patented, designed and manufactured in Australia
✅ Suitable for FANS only.  NOT SUITABLE FOR 3-IN-1 heat / lamp / fan units

IMPORTANT NOTE: 
Do you have a 3-in-1 heat, light and fan unit?  From July 2026, due to different input material, the DRAFTSTOPPA is NOT SUITABLE for 3-in-1 heat, light and fan unit, even with the Adapter / Mounting Plate.   There is a separate kit for 3 in 1 fans, click here.