English, 08.03.2021 05:10 lezapancakes13
Excerpt from Recommendedc Levels of Insulation (excerpt II)
U. S. Environmental Protection Agency
Insulation is made from a variety of materials, and it usually comes in four types: rolls and batts, loose-fill, rigid foam, and foam-
in-place. S. Rolls and batts-or blankets-are flexible products made from mineral fibers, such as fiberglass and rock wool. They
are available in widths suited to standard spacing of wall studs and attic or floor joists: 2 in. x 4 in. walls can hold R-13 or R-15
batts; 2 in. x 6 in. walls can use R-19 or R-21 products.
What can be said about "rolls and batts" from this passage?
A)
they only come in one size
B)
they come in different sizes
0)
they are made of polyurethane
D)
they are not a type of insulation
E)
they are usually made of loose fibers or fiber pellets
Join d
Answers: 2
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Excerpt from Recommendedc Levels of Insulation (excerpt II)
U. S. Environmental Protection Agency
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