I should've read the other 4 out of 5 previous dissatisfied customer reviews before I made this purchase. I tried these Magnetic HVAC Covers on three different types of vertical registers and vents... Needless to say, they all failed... Even without the HVAC unit functioning. I'd like to believe I could've wasted $5.98 on something more useful. :-(
Verified purchase: Yes | Condition: New
These covers do not do work at all. . I tried to use these covers on a wall vent. The vent is closed. I wanted these covers to block the minimal residual air flow. They did not work. They are not strong enough to stay on the wall. Totally worthless. I cannot believe a product can be so bad. If they won't stick to a wall vent; how can they claim to stick to ceiling vent. This product deserves zero stars and should be removed from the market.
Verified purchase: Yes | Condition: New
Large, and will keep out the heat & cold as needed. THEN, today I went to put it on the vent (which are metal), and they do not stick, no way no how...tape doesn't like the heat, so even taping them in place didn't work...
Verified purchase: Yes | Condition: New
work well really keep cold air out until I need to remove this magnetic cover.
Verified purchase: Yes | Condition: New
Sure helped cutting off cold breeze thru air ducts. Apartment stayed warmed for the last three nights. I recommend this product if you are interested in saving energy.
Verified purchase: Yes | Condition: New
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