Price: $67.96 as of 11/23/2009 10:00 EST
Availability: Usually ships in 1-2 business days
Binding: Health and Beauty
Brand: 3M
Item Dimensions: 10020002000
Label: 3M Filtrete
Manufacturer: 3M Filtrete
MPN: MD20X20_4
Publisher: 3M Filtrete
Size: 20x20x1
Studio: 3M Filtrete
Features:- 1250 Performance Rating, MERV 11 Rating.
- Convenient package of 4 filters.
- Up to 3 months of filtering performance.
- 25% more efficient than the Filtrete Micro Allergen Filter. 15% better airflow then the Filtrete Micro Allergen Filter.
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Editorial Review:
Product Description:
Meets the American Lung Association Health House Indoor Air Quality Guidelines. Captures: 90% of large allergens - like mold spores and pet dander - from the air passing through the filter; microscopic allergens like dust, smoke and smog particles; and bacteria and particles that can carry viruses. No unnecessary antimicrobial chemicals added. Filtrete filtering material will not support the growth of bacteria, mold, mildew or fungi in normal use.
Average Rating: 
Rating:  -
We Noticed an immediated improvement in our health. High end filters are much better than cheap filters for personal health.
Rating:  -
Amazon advertises this as a 6 pack. The vendor sent a 4 pack. The vendor claims Amazon misrepresented it and they would not honor it. They paid for the return, but Amazon would not help. VERY DISAPPOINTED............
Rating: -
This is not for THIS product. It is for the Filtrete 1700 (blue package) their BEST product.
I wanted better filtration because of allergies. Thought I'd try the Filtrete 1700 (blue package), the Max-Allergen BEST FILTER (with the 1700 rating).
Slapped it in and the house just would not get warm or stay warm. We punched the temperature up a little Still not feeling warm. Then the furnace actually SHUT DOWN. I pulled the Filtrete filter and everything started working again.
Strange.
Called 3M Filtrete customer service. Explained the situation. We have a newer two-speed 80% efficiency furnace. They were mystified. They suggested I replace the filter. I explained that you could still see sunlight through the filter, it was only slightly dirty. But I went out and bought another one anyway.
Things seemed a little better (no furnace shut down) but it was still much cooler in the house. The furnace didn't seem to be doing its job very well. Pulled the Filtrete 1700 and put back the old washable electrostatic filter I'd used for years. Twenty minutes later the house feels much warmer and airflow is significantly better.
Side note: When I put the old filter back in, the furnace felt much warmer than usual. I am convinced that the filter was significantly restricting airflow and would eventually cause it to be damaged. I doubt the damage would have been just to the blower motor. I am concerned that it could also damage the heat exchanger, because of the additional call for heat that the furnace could NOT deliver with the Filtrete filter in place. Crack a heat exchanger and you stand the risk of poisoning your family with CO2 fumes. To say that I am uneasy about using Filtrete is an understatement.
Rating: -
Quick Shipping. No damage to filters. I have been using these filters for years. They really cut down on the dust in the house.
Rating: -
The product arrived timely and in great shape. The filters are great! I ususally buy them at a local building supply store or Wal-Mart. Much more economical ordering via Amazon. I high recommend.
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