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.
Images: Here you can see the calf muscles, first the superficial muscles. The two headed calf muscle (4) is removed in the 3rd picture. You can find the legend at the end of this page: Legend. The calf (sural region) is the rear upper muscular region of the lower leg. Not all muscles in the calf are calf muscles, however. The calf is defined largely as the three headed calf muscle (triceps surae muscle). You can find more details under the headings superficial lower leg muscles and deep lower leg muscles.