what does merv number mean?
174341
The MERV number is a rating system. Minimum efficiency report value (MERV). Basically, the higher the MERV rating the greater percentage of particles captured. MERV 11 as this filter is, is for Superior Residential applications, meaning it's the higher end of the residential markets. The next bump up is MERV 13 which is typically used in a hospital type setting.
174342
it's a rating for how much is filtered out of the air. allergens, dust, etc. the higher the rating the better...
994028
Not sure on an est. number, but a lot of uses. Should last a customer many years.
988310
It is difficult to see, but on the top left edge of the picture of the product you can see it says MERV 12. It is upside down, but printed there.
2170903
Someone must know the rating, but that info is not here on Amazon's page or on the product label photos. 3M's own site doesn't even show this "Select Healthy Living" model name or its MERV rating. Not good when makers and sellers conceal information, and very untypical of 3M.
1883935
I don't know what the difference is between the two numbers. Have you tried to "Google" it using each number? Wish that I could be more helpful.
791319
it refers to the number you get not size. worked for our windows really well!
1742742
I did a search on the internet and found this link: http://www.filters4life.com/What-is-MERV-rating-s/4961.htm . It give information from 1-16 and gives a color guide of red for the lowest, yellow, light green and darker green for the best. This indicates that 11-16 is in the darker green, with 16 cutting 95% of the dust and allergen particals. I'm glad you ask because that give me a better ideas of what I'll want the next time I purchase.
1907796
Thanks for your question, According to the product details, this listing is for Merv 11 media. I hope this helps!
991654
Merlene- I don't have the model number but I wanted to let you know that this product has worked wonderfully. Very secure and just the right height after hip surgery.
39780
The tag has the GOTS stamp on it and that it is Certified by OneCert. ONE-514-120319-T-GOTS. Hope this information is helpful.
1950246
The difference is what is filtered the higher the Merv number the small the particles that will be filtered. You can Google Merv to get a more detail definition.
980850
I believe it means 'Grams per Square Meter'. The greater/higher/larger that number, the more plush the towel. The 'plushier' the towel, the more water it will hold. Also, the more dirt it will lift from the surface you are cleaning.
2012017
I am not sure, but it also shows the number you are asking about without the S on the end of the number.
1334021
The number 77 indicates the maximum load that the tire can support. In this case, 77 corresponds to a maximum load capacity in kg.W The letter W indicates the maximum speed that a tire can support. In this case, W corresponds to a maximum speed of km/h.
1973249
It's definitely the 214 number. It's a good safe for the money. The paint starting pealing off after I got it in the house and moved it around though...very disappointing. Wasn't worth the effort of returning. Check it carefully for this problem before you install it. Hope this helps.
1460572
The MERV rating is 11. The MPR rating is 1100. An MPR range of 1000 to 1500 is within the 11 MERV rating. I found this information on the Filtrete website.
1836082
Assuming that you meant Ringer equivalence number (REN), I have no idea what that means. Maybe if you could be more specific, I could answer the question.