Caution! The site can't guarantee, that text has age permission. The site is not recommended, if you are less than 18 years old.
The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... Most duct systems use outlets that are 6 inches tall and about 12 inches wide. SDHV systems use smaller and less noticeable outlets, often several per room, so that air is evenly distributed. These flexible, insulated feeder ducts are only 2 inches to 3 inches in inner diameter. In diameter, and air moves through them at about 1,500 feet per minute (fpm) compared with 500 fpm to 600 fpm in standard ductwork. High pressure also eliminates dust buildup within the ducts, which improves indoor air quality. ... "