Frost King Heat and Air Deflector-HD7 - The Home Depot

Frost King

Model # HD7

Internet # 100575548

Store SKU # 186804

Heat and Air Deflector

Frost King Heat and Air Deflector

This item has been discontinued.
The Home Depot no longer carries this specific product.

$3.98 / each
  • Redirects and improves air flow
  • Magnets hold the deflector securely in place


Model # HD7

Internet # 100575548

Store SKU # 186804

Store SO SKU # 923710

The Thermwell Products Co. Inc Heat and Air Deflector feature a curved, magnetized design that is designed to redirect the air flow in central forced-air systems for optimal heating and cooling.

  • Adjustable 10 - 14 in. size
  • Turn downwards during the winter for heating
  • Turn upwards during the summer for air conditioning
  • Plastic construction provides durability
  • Note: Product may vary by store.


Assembled Depth (in.)  3.0 in  Assembled Height (in.)  3.875 in 
Assembled Width (in.)  9.375 in  Maximum duct height (in.)  4 or less 
Maximum duct width (in.)  12-1/8 to 16  Outside Length  9.375 in 
Outside Width  3.875 in 
Air deflection  1-way  Color  Clear 
Color Family  Clear  Decorative  No 
Louvered  No  Material  Plastic 
Product Weight (lb.)  .4 lb  Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  1 Year 


Rated 4.6 out of 5 by 19 reviewers.
Rated 4.0 out of 5.0 by It works!! It works as it describes! This product is adjustable and may fit in any vent. December 17, 2014
Rated 1.0 out of 5.0 by Thin Plastic Started to Melt on My Registers Somebody must have fudged a heat test because the deflector began to melt and become mis-shapened after only only a few minutes attached to my vent register. The air was quite warm but I would have thought that these deflectors would be designed to stand at least that much heat coming out of the vent. Cheap quality. January 19, 2015
Rated 5.0 out of 5.0 by great for those silly floor registers that blow upwards My home mostly has heat registers that blow the warm air upwards. In addition to the fact that this puts the vertical blinds into a frenzy, the air that is intended to warm the room just rises that much faster and doesn't do the job. The most noticeable improvement with these was that the vertical blinds are now calm when the heat comes on. Big plus. The other is that the heat seems to distribute more in the room before it rises. Not sure I can provide evidence of this, but it makes sense to me that these contribute to a better convection. The only down side is that the magnets are just magnets and can be kicked out of place. If these deflectors were made to adhere more permanently, though, they would break, so it works best as is. January 22, 2014
Rated 4.0 out of 5.0 As advertised Does a good job deflecting the air. Magnets hold tight. It would be nice if the slide grooves fit a little tighter, but it's not a big deal. Great deal for the price. December 4, 2012
Rated 4.0 out of 5.0 by It does what it says it will do We put this over a vent that was being blocked by our couch, and it works perfectly. The room is warmer now (we're currently in winter). We only had one problem: our vents are wooden, not metal, so the deflector is sitting on top of, rather than being magnetized to, our vent. Because it is under the couch, however, it isn't often jostled and still works well. February 7, 2013
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