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.
The body region commonly referred to as the calf is in the back of the leg, just below the knee. The calf is made of three major muscles. These muscles are the two gastrocnemius muscles (medial and lateral), and the soleus muscle. Another smaller muscle called the plantaris muscle, is also in the calf. There are two bones in the calf region, the larger tibia and the smaller fibula.