Eureka Air Under Furniture Magnetic Vent Extender, 1.5mm Thick Heavy Duty Premium Material, Fits Floor Registers 10" and 12" Wide, Adjusts from 17" to 33" Long (1-Pack)

I put this under a bed that really couldn't go anywhere else. But first I accidentally stomped on it really hard (on the extender part). Nothing happened. It didn't even dent. Also, it works. I can feel the air just fine. This is just genius, and well made, even though it doesn't feel like it (it's thin). The magnets stick well. I'm impressed. Worth it.

Works well. I used it under a desk in my office. Directs the heat out to the room instead of under the desk. Magnets to the floor vent, so easy to put on.

This does what it is designed to do. It directs the air floor from the vents in the direction we wanted. It can expand and contract. However, the material is pretty flimsy plastic, and there's nothing keeping the two parts together but the fact that they fit inside each other. Also one of the magnets fell off at some point after we'd had it for months. Still, for the price, I can hardly complain.

Great product. Magnetic on the vents hold them down nicely. The extensions work great if your vents are behind furniture like couches or benches. Directs air out from under them very well.

Works great, but about 14 inches short of the front of my sofa, the sofa is only 6 inches off the wall, the register is only 3 inches from the baseboard, for reference.

This is exactly what we needed! It does a fantastic job redirecting the airflow from under our furniture and pushing it out into the room. In our living room and bedroom, every piece of furniture ends up sitting over a vent, and this has been a must-have solution. The magnetic attachment makes it easy to install and keeps it securely in place. Since adding these, we’ve noticed a big difference in how evenly the rooms heat and cool. Simple idea, but it works great—highly recommended if you have vents blocked by furniture!

A simple solution that is very effective. No more heating the underside of my couch.. note I’m heating the living space.

Vent way too far back under furniture? This is the product you need to get the cool air out from under the furniture and get it into the room.

These work perfectly.

Had to trim a bit but it worked great under our dresser.

It does the job under by daughter's dresser. However, it feels like it should be about half the listed price.

Ecellent brings heat under couch.

This is a costly item for a piece of plastic but it works so well you will soon forget the cost. The magnets are strong and the glue stickers to customize the desired length are a fantastic.