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 three-digit. system will handle up to 99 calves in. a year or calf crop season. The four-. digit system will handle up to 999. calves. Alternatively, the last digit or the. last two digits may represent the. year, and the first two or three digits. would indicate the calfâs own number. For example, 5609 (or 569) would be. the 56th calf born in 2009 in this.