These twin-tube draft stoppers slide beneath a compatible door so a foam tube sits on each side of the bottom gap. The selected variant contains three grey stoppers.
How the design works
- Two foam tubes sit inside a connected fabric sleeve.
- The sleeve passes underneath the door.
- The two-sided design moves with the door when correctly fitted.
- The tubes can help reduce air movement, dust and light through the lower gap.
Compatibility checklist
- Measure the door width, thickness and floor clearance before ordering.
- Check that the sleeve can pass beneath the door without preventing it from opening or closing.
- Confirm there is enough clearance over carpet, thresholds and uneven flooring.
- Fit the tubes evenly and test the full swing of the door.
This is an under-door sleeve, not a self-adhesive strip. It is intended for hinged doors with a compatible bottom gap, not windows or sliding doors.
Frequently asked questions
Does it soundproof a room?
No. It may reduce some sound passing through the bottom gap, but it does not soundproof a door or room.
Will it lower my energy bill?
No savings are guaranteed. Reducing a suitable door gap can limit some airflow, but building insulation, climate, heating and cooling systems all affect energy use.
Does it keep insects out?
It may cover part of a compatible lower gap, but it is not a certified pest barrier and cannot seal the sides or top of a door.
Can it be used on every floor?
No. Thick carpet, raised thresholds and uneven surfaces may restrict movement. Measure and test clearance carefully.
Package contents
Three grey twin-tube under-door draft stoppers.

