Even though I have a well isolated house I can feel some draft from the gaps between window/door and frame around it. Since most windows are not openendin winter (closed loop ventilation in house) I printed a very simple strip that can be folded in the right dimension in order to fit springloaded in the gap. It can accomodate gaps between 2 and 8 mm. You can print 11 strips of 220 mm in one run (approx 2 meters, 6.6ft net). I assume it will safe gas and make the rooms more comfortable.

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Thanks.