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๐ Redirect your airflow, reclaim your comfort.
The Frost King HD11 Baseboard Air Deflector is a heavy-duty, clear plastic vent accessory designed to improve heating and cooling efficiency in homes. It magnetically attaches to metal baseboard registers, adjustable from 15 to 25 inches wide, and includes a dust filter to enhance air quality. Ideal for central forced air systems, it optimizes airflow direction for year-round comfort with easy, tool-free installation.



| Additional Features | Adjustable |
| Air Conditioner Application | Residential |
| Asin | B001RUO5P8 |
| Bee Star Rating | 1 Star |
| Best Sellers Rank | #10,143 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #61 in Registers, Grilles & Vents |
| Brand Name | Frost King |
| Capacity | 25 liters |
| Color | Clear Plastic |
| Compressor Type | rotary_scroll |
| Control Method | Remote |
| Controller Type | Remote Control |
| Cooling Power | 1 british thermal units |
| Core Material | plastic |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,878) 3.9 out of 5 stars |
| Efficiency | High |
| Form Factor | Plastic deflector with magnetic hold and adjustable size |
| Global Trade Identification Number | 00077578054575 |
| Included Components | User Manual |
| Installation Type | Packaged |
| Inverter Type | No Inverter |
| Item Dimensions D X W X H | 4.2"D x 10.13"W x 4"H |
| Item Type Name | Baseboard Air Deflector, Expands from 15" to 25" |
| Item Weight | 13.61 g |
| Manufacturer | Thermwell Products Co., Inc |
| Manufacturer Contact Information | 1-800-526-5265 |
| Model Name | HD11 |
| Model Number | HD11 |
| Number Of Power Levels | 1 |
| Operating Mode | Heating, Cooling |
| Power Source | not_applicable |
| Room Type | Bedroom, Kitchen, Living Room |
| Start Year | 2023 |
| Unit Count | 1 Count |
| Upc | 077578054575 |
| Voltage | 110 volts |
| Warranty Description | Limited manufacturer warranty |
| Warranty Type | Limited |
| Wattage | 1 |
| Window Opening Maximum Height | 15 inches |
| Window Opening Maximum Width | 25 inches |
| Window Opening Minimum Height | 15 inches |
| Window Opening Minimum Width | 15 inches |
User
Nice product for the price and well made
Number one the magnets are strong enough to secure to baseboard vent.Number two for baseboard vents that are under a window and curtains the deflector directs the air flow out into the room instead of going up into the curtains. makes things cooler in the room since cool air is not trapped between the curtain and the window.
User
Perfect
I actually ordered this to use on our window AC unit since we wanted a simpler cleaner look and the air deflected in our narrow home. Works perfect.
User
Works WellโJust Don't Fully Extend It
I bought this to use on the wall-mounted air conditioning unit in my office because the vents aren't adjustable. It has worked very well for redirecting the airflow away from my desk, making the office much more comfortable.The magnetic attachment is strong, and installation took just a minute. The clear plastic also blends in nicely without being too noticeable.The only reason I'm giving it four stars instead of five is that it can't be extended to its full length. When I tried to fully extend it, the two sections tended to separate. Keeping it slightly shorter solved the problem, but I wish the connection between the pieces was a little more secure.Overall, it's an effective solution for directing airflow, and I'm glad I purchased it.
User
"IT IS FRAGILE" IS AN UNDERSTATEMENT.
Wow. I saw reviews of people saying this arrived broken, or that it broke easily... let me tell you.Mine arrived in perfect condition. I was going to use it to redirect the air from my window air conditioner away from my couch, as it points directly to my favorite seat on the couch and it gets way too cold.The magnets on the side might as well not even be an option because they have 0 strength. The only way the magnets would do anything at all is if you have this laying on the floor, FLAT. I think the magnets were installed just to keep this thing from moving left and right, but that's it. If you plan on mounting this on any other surface thats not flat on the floor, like wall or ceiling vents, you might as well order velcro tape or double sided sticky tape or something because this wont hold its own weight. In its defense, this technically was designed to lay flat on the floor but seriously they couldn't have found a weaker magnet for this...ANYWAY, I used Velcro trape to secure it to my Midea U Shape Window AC. It wasn't holding very well and was wanting to fall off, so I went to remove it to re secure the velcro, and I dropped it... It fell LITERALLY about a 1 foot, onto a CARPET FLOOR, and get this, IT BROKE!I am beyond shocked!!!! No wonder these were arriving broken etc! I will say it worked great for what I was using it for but now will need to re order. Maybe ill just find one of those thin flimsy plastic pieces that can bend and I'll rig something to redirect the air instead.1st pic is selft explanatory.2nd pic is how I had it set up.3rd pic just shows how far the floor is.
User
Built for baseboard registers ONLY despite all the other words above.
The description above is a mess. It quotes different lengths, different versions of potential uses. It's a list of contradictory points.The product I actually received is built for baseboard registers -- not wall, floor, or ceiling registers despite the promises above. The magnets are sandwiched between plastic strips that allow them to work only on the sides. There are little nubbins (I hope you can see this in the photo attached) that stop the sides from lying flush against a wall, floor or ceiling.I had a hard time finding anything else this size, so I will use this for the ceiling register heat and cooling drafts I need to deflect, but I will use brackets made to attach mirrors to walls or doors to install this. (Thanks to another Amazon reviewer for this idea!)The magnets are cumbersome dead weight to work around for a wall or ceiling installation using brackets and screws. As another reviewer said, the shield won't even stand up on a floor register -- it falls over. It's meant for baseboard registers -- 1940s-50s style upright at floor level, but not in the floor. The magnets are pretty big and clunky for the tiny strips of their sides exposed. I don't have a baseboard register handy to test how they might or might not hold.
User
The best deal on quality product.
I read that there were several negative comments about this product. I received my promptly and in excellent shape. It fit perfectly. Just what I needed. Very happy.
User
Arrived in tact and is perfect for my intended use
Item arrived in tact and does the job itโs meant to do. My house has uncommonly large 18โ baseboard vents and this was one of the few options available on Amazon. For some reason 95% of the ones on Amazon only go to ~15โ.Again, mine arrived unbroken and are perfect for my application.
User
Perfect
Ait conditioner in window by my head. This is a DIY thought to deflect air. All I can say is PERFECT. Just PERFECT
User
Poor
Arrived broken and magnets not strong enough to hold it in place, due to cost i threw it in yhe bin.
User
Quality
This item extending to 25" is difficult to come by so was happy to see FROST KING had the size I needed at a good price. Item arrived in good condition and plastic is sturdier than those I've bought in the past from different brands at higher cost. I've been using their plastic window kits for years and been very satisfied.
User
Funciona
Bien
User
Muy delicado
Mientras lo intentaba poner, se quebro. Muy delgado y delicado
User
Donโt buy this
Absolute garbage. With base heater on low, it actually melted
Trustpilot
3 weeks ago
4 days ago