Bus routes operating in DC or Maryland use only a number, or a letter and a number, as noted below.
The two main types of carpet construction are defined by the way the carpet fibers are attached to their backing. Loop pile means the fibers are bent into little loops. Itâs a very durable, stain-resistant carpeting, but has a low profile and limited cushioning. Level loop is also called Berber.
Comparing Carpet Fibers. There are four basic fibers that are used to manufacture carpets today, and they all have unique qualities and strengths. Better still, they all make excellent carpets. Ultimately, your choice should be determined by the characteristics that are most important to you and your home. Fiber.