Model # AZFL-100

Internet #205478389

Store SKU #1002451200

FilterLock Air Filter Slot/Door Cover for 1 in. Air Filter
0855118000257

FilterLock

Air Filter Slot/Door Cover for 1 in. Air Filter

  • Reduces energy and makes 1-inch air filters work better
  • Blocks airborne dust, allergens and dangerous radon gas
  • Attaches with built-in magnets (no tools required)
$798 /each
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Product Overview

  • Reduces energy and makes 1-inch air filters work better
  • Blocks airborne dust, allergens and dangerous radon gas
  • Attaches with built-in magnets (no tools required)
FilterLock can be used with any 1 in. air filter to improve indoor air quality and reduce energy consumption. The patented, 1-size-fits-all product effectively seals the filter slot/door after the filter is installed, to eliminate the possibility of harmful airborne allergens and pollutants from entering the HVAC system due to air leakage. FilterLock is used by heating and air conditioning, energy auditing and weatherization professionals to stop air leakage, enhance HVAC system integrity and improve the performance of 1 in. air filters.
  • Sealing air leakage/by-pass at the filter slot/door forces dirty air to travel through the filter instead of around it
  • Reusable overlapping 2 piece design works with any brand 1 in. air filter up to 25 in. long
  • FilterLock has built-in magnets which hold it securely to the metal duct work
  • Installs in seconds without the use of any tools
  • Energy star identified air leakage at the furnace and filter slot/door as 1 of 4 major problems with duct work
  • FilterLock satisfies the department of energy recommendation that the furnace filter slot be covered to avoid air leaks

Product Overview

FilterLock can be used with any 1 in. air filter to improve indoor air quality and reduce energy consumption. The patented, 1-size-fits-all product effectively seals the filter slot/door after the filter is installed, to eliminate the possibility of harmful airborne allergens and pollutants from entering the HVAC system due to air leakage. FilterLock is used by heating and air conditioning, energy auditing and weatherization professionals to stop air leakage, enhance HVAC system integrity and improve the performance of 1 in. air filters.

  • Sealing air leakage/by-pass at the filter slot/door forces dirty air to travel through the filter instead of around it
  • Reusable overlapping 2 piece design works with any brand 1 in. air filter up to 25 in. long
  • FilterLock has built-in magnets which hold it securely to the metal duct work
  • Installs in seconds without the use of any tools
  • Energy star identified air leakage at the furnace and filter slot/door as 1 of 4 major problems with duct work
  • FilterLock satisfies the department of energy recommendation that the furnace filter slot be covered to avoid air leaks

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Name 4 in. x 12 in. Vent Filters (12-Pack) Air Filter Slot/Door Cover for 1 in. Air Filter Vent Filters (6-Pack) Replacement Wick for Kerosene Heater DH1051
Brand FilterLock DuraHeat
Ratings (19) (79) (12) (3)
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Specifications

Dimensions

Product Depth (in.)
0.125
Product Height (in.)
25 in
Product Thickness (in.)
.20 in
Product Width (in.)
4.75 in

Details

Brand/Model Compatibility
Works with all 1 inch air filter brands, including Filtrete, Dupont, True Blue, Rheem, Honeywell, NaturalAire, Flanders, Web
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
This AllergyZone, LLC product will be free from defects in material and manufacture. If this product is defective your exclusive remedy shall be, at AllergyZone’s option, replacement of the product or refund of the purchase price.

Specifications

Dimensions

Product Depth (in.)
0.125
Product Height (in.)
25 in
Product Thickness (in.)
.20 in
Product Width (in.)
4.75 in

Details

Brand/Model Compatibility
Works with all 1 inch air filter brands, including Filtrete, Dupont, True Blue, Rheem, Honeywell, NaturalAire, Flanders, Web
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
This AllergyZone, LLC product will be free from defects in material and manufacture. If this product is defective your exclusive remedy shall be, at AllergyZone’s option, replacement of the product or refund of the purchase price.

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Questions & Answers

For a 30" x 20" ?

Do I need to buy 2 of these for my 30" x 20" filter? At the specs it looks like it is 20 x 25.
Asked by: Sebastian
I di not have to one worked well for me but careful not to waste any or you may be short
Answered by: Denny
Date published: 2017-03-28
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Customer Reviews

Air Filter Slot/Door Cover for 1 in. Air Filter is rated 4.3 out of 5 by 79.
Rated 5 out of 5 by from SEALS OFF FILTER OPENING Saw these on Home Depots site and for the value and it's purpose figured why not worth a try. Upon attaching to my 20 inch furnace slot it seemed to seal it off pretty good with the magnets on each end of the Filter Lock. Needed to use both of them in the package in order to cover the full 20 inches. Have only had them on for about 2 weeks, but seems to be lessening the amount of dust in the living area upstairs. Definitely worth the price. Only recommendation if the company sees that they are a good product that catches on would be to make different sizes for the different size filter slots so you don't have to use multiple Filter Locks for one slot.
Date published: 2016-10-20
Rated 5 out of 5 by from Appears to seal well I just used it in the last week as that was when my filter needed replaced. it appears to be sealing any air from leaking in resulting in air not be filtered. It is easy to apply. The one thing I learned is that you must have a clean surface. I used some alcohol on a lint free rag to clean my surfaces. Make sure there is no grease residue on the surface.
Date published: 2017-03-28
Rated 5 out of 5 by from Nice product, easy to attach, built-in magnetic strips, seals air filter Nice product, easy to attach, built-in magnetic strips, seals air filter
Date published: 2017-05-23
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2017-04-04
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-05
Rated 4 out of 5 by from Filter cover This item is so simple you'll have one of those "why didn't I think of that" moments. It is two pieces of very flexible material with magnets in three sides so it can be positioned to cover the filter and acts as a sealer to reduce the amount of air getting in around the filter. So far so good, but our cold weather has just begun so I can say so far it is doing what it was intended to do, but I just wonder if the material will hold up more than a couple of seasons.
Date published: 2016-10-26
Rated 5 out of 5 by from Furnaces should just come with these! This is one of those things everyone should get. Every time I change the filter I notice dust on both sides of it . Because it's not a tight fit in the slot, outside unfiltered (and unheated/cooled) air is getting sucked in. This is such a simple and universal solution that it should just come with furnaces. It's basically a shower curtain liner. Two pieces of thick plastic and magnets. Put one on, put the other over it so they overlap, and that's it, and it's reusable so there's no need to buy a new one every month. No more air getting in, no more air getting blown past the filter. Better dust filtering and better efficiency for your system.
Date published: 2015-11-20
Rated 5 out of 5 by from Product is much better and easier to use than the duct tape I had tried prior to this purchase. ... Product is much better and easier to use than the duct tape I had tried prior to this purchase. I thought the two sections, so you can adjust for the size of filter slot, to be great thinking. The material seals into place and attaches even more as the furnace activates drawing down on the cover due to air flow. Very easy to take off and replace filter then recover the slot.
Date published: 2016-12-06
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