Permasteel is a medium weight Galvanized filter, made with a hot dipped Galvanized Steel frame. No less than six layers of expanded steel, laid at right angles to each other, make up this pad. This filter element is processed from sheet steel, commercially known as hot dip Galvanized, no less than .0157 in thickness, expanded through no less than .020 feed. The Permasteel filter will retain 290 grams of dust per 2.25 sq. ft. (20 x 20). Resistance when clean is 0.05 w.g. at 350 FPM. Maximum capacity is 0.335 w.g. Frames are made from sheets of hot dip Galvanized Steel. The maximum temperature range for the Smith Permasteel is 425 degrees F. The recommended use for these filters is in the air handling units for commercial buildings, restaurants, schools and office buildings plus light industrial applications.
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