Box vents are not mechanical vents and work better when used with soffit ventilation. They're designed to work with open attics and do not need to be placed close to roof ridges to work optimally. They are also known as low profile vents because they are static and installed over a hole cut into the roof.
Stone Mountain is made of igneous granite which is composed of quartz, feldspar, microcline and muscovite, with smaller amounts of biotite and tourmaline. Embedded in the gran â¦ ite are xenoliths or pieces of foreign rocks entrained in the magma. 13 people found this useful. T.E. Woodwose.
Quick Facts. 1  Kidney stones are made of salts and minerals in the urine that stick together to form small pebbles.. They can be as small as grains of sand or as large as golf balls. 2  There are different types of kidney stones. Most stones are a combination of calcium and oxalate.