What are they?
Understanding the Rating System To find the best carpet for you.
There is a performance rating for carpets that you want to look at before buying. The rating system, called par, is a numerical system ranging from 1 to 5. The 5 rating is the top-of-the-line and extremely, extremely rare. You may run across a 4 now and then, but most brand-name carpets fall into the 3 to 3.75 range. If the carpet is rated a 1 or 2, don't expect to see that on the label. You will have to ask for the rating.
The par rating system is based on a number of factors, such as how well the yarn will resist fraying, how fade-resistant it is, whether it has stain-resistant features or not....basically, all the qualities you want in a carpet.
Two Main Grades Beyond the performance rating.
There are basically two types of grades for carpeting (beyond the performance rating). They are: base grades and branded yarn.
What Else Do You Need to Know?
A look at some other basics....
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