While The Home Depot uses FPR, the industry standard is to use the air filter rating system of Minimum Efficiency Reporting Value (MERV). The MERV rating system helps you choose the filter right for you, with each rating dictating the effectiveness of a filter. The higher the MERV rating, the more efficient the filter, and the more a filter can catch harmful pollutants. 
To help put this into perspective, a hair from your head is about 60-75 microns in diameter. Particles under 35 microns are not visible to the naked eye. You can’t see most of the contaminants in the air. Pollen particles can range from 10 to 100 microns in size; dust from 0.5 to 5 microns; human dander, 10 microns or higher; etc. The majority of harmful particles are less than 5 microns in size.  Source
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Getting an exact fit is crucial to having an effective air filter - the wrong size won't fit and will cause the filter to stop working properly. To ensure you get the right fit, take your current air filter out and check the size printed on the frame. And if you need a custom sized filter, The Home Depot has you covered. We also offer an air filter subsciption. Check out some air filters that are air filter subscription eligible. 
In my experience the powered electrostatic filters remove nearly everything from the air stream. The navy uses these on submarines to take the pollutants out of the air, in this usage we washed them monthly due to the amount of things they pull from the air. I have had a big Honeywell system on one house I have owned - it was the only house that never had a dust problem. The filter pulled everything from the air. Every 2 or 3 months I would run the cells through the dishwasher then give them a quick look for broken wires. An hour with the blower on and the power off drys them then back on with the power for another 3 months.
I was put in dangerous areas going to door to door and it is not safe. Outside all day long (depends where you live) I live in FL so it was brutal. Work 6 out of 7 days a week. When you get out of your training period you are ordered to "walk" with new recruits, but by doing so when you go and show them how to sell while they are supposed to watch, no talk or do anything, you have to split your entire sale 50%... with the person you are teaching. Commission is a horrible percentage of the total value of what you are selling (only 150$ for a 1,600$ system.) You get 150 working alone and walking with someone you have to split the commission. A promotion is not really a promotion. They promote you as a team leader but you are not allowed to walk and makes sales only assist over the phone to make sales and make less money with more responsibility.
“This filter has given us water that is as good or better than the large bottles of spring water we'd been buying,” one tester revealed. In addition to the water quality, reviewers liked that once it was set up, the separate faucet was easy to access, with the filter system fitting nicely underneath the sink. The one negative, according to our reviewers, was the time-consuming installation, but, overall, they thought it was worth the price tag: “We'll have to buy new filters, but we'll still save money in the long run by no longer buying bottled water,” one person noted.
I don't want to harp on the issue of whether wood is sturdy enough. Much like other portable storage companies, Door to Door offers mostly wood containers and a weatherproof cover. Many reviewers had no issue with this fact. But a couple of the ones on Yelp mentioned warping and dents, nothing major. And it sounded as though Door to Door responded to fix problems that rested on its shoulders. But if protecting your stuff is of the utmost importance, then you might be more inclined to pick a metal container over a wood one. It's a matter of preference and priorities. In the case of Door to Door, which seems to put all the responsibility on the shoulders of the customer when it comes to the care of the stuff held in the container (read the terms and services) and has no visible insurance plans on the website, the type of container may be elevated in importance.

While The Home Depot uses FPR, the industry standard is to use the air filter rating system of Minimum Efficiency Reporting Value (MERV). The MERV rating system helps you choose the filter right for you, with each rating dictating the effectiveness of a filter. The higher the MERV rating, the more efficient the filter, and the more a filter can catch harmful pollutants. 


We offer water filters as both under sink water filters and counter top water filters by CB Tech, rated #1 by Consumer Reports and all CB Tech water filters are Made in the USA.  Our selection of the finest HEPA air purifiers by IQAir HealthPro and HealthPro Plus air purifiers, AustinAir HealthMate air cleaners and Blueair air purifiers are the top-rated by Consumers Digest and the Association of Home Appliance Manufacturers (AHAM).  Add a necessity for your shower and have healthy hair and skin. We carry shower filters in both hand held and shower head styles and all NSF Certified to reduce chlorine, chlorine compounds, odors, sediment and more from your shower. We offer Furnace and HVAC Filters in thicknesses of 1", 2" and 4" in every size to fit your needs.  Equivalent to 3M Filtrete and Honeywell, these furnace filters are also available with an additional gas and odor removing carbon filter layer.  Our refrigerator water filters  are as good or better than Original Equipment at a fraction of the cost.
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