Pre Pleat HV air filters are designed to operate in high velocity and turbulent air applications where standard pleated filters tend to fail. Pre Pleat Class 1 air filters are designed for applications where a UL Class 1 fire rated filter is required and metal frames are unsuitable. Pre Pleat HT air filters are designed for applications where the temperatures reach up to 500 oF.
Noun [edit]. calf â(plural calves or calfs). 1  A young cow or bull. 2  Leather made of the skin of the calf; especially, a fine, light-coloured leather used in bookbinding. 3  A young elephant, seal or whale (also used of some other animals) . 4  A chunk of ice broken off of a larger glacier, ice shelf, or iceberg.
Cattle can only be used in the plural and not in the singular: it is a plurale tantum. Thus one may refer to three cattle or some cattle, but not one cattle. No universally used singular form in modern English of cattle exists, other than the sex-and age-specific terms such as cow, bull, steer and heifer.attle raised for human consumption are called  beef cattle . Within the beef cattle industry in parts of the United States, the term beef (plural beeves) is still used in its archaic sense to refer to an animal of either sex.