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.
Oxen (plural of ox) used to be the general term for all kinds of cattle-males are bulls, females are cows. Mostly the words ox and oxen are used for cattle used as work animals to pull ploughs and loads, and these are often neutered bullocks (young bulls).Young cows are called heifers.n Ox is just another breed of cow. The Male of the Ox breed is called a Bull as well. And yes the male calf of a cow is called a Bull when he grows up.