Product review (1 stars): Hmmm, not the right fit.
Looked good in the description. I should have read the details and reviews. Firstly, it is too small in width for many US registers. This product only spanned about 80% of our register. (About 13 inches). Secondly our new furnace literally lifted the light weight plastic off the floor. Only If you have narrow registers And your airflow is slow this might be a good choice.