Labels:crt screen | dialog box | hakham | monitor | plant | windowpane OCR: Understanding the UL Fire Resistance Directories Loose Fill Material: an alternate to Item any loose fill material bearing the UL Classification Marking Surface Burning Characteristics, having min density pef and installed amax thickness of 3-1/2 Duct: Any UL Class Class flexible air duct installed 11 accordance with the instructions provided the damper manufacturer Ceiling Damper: Maximum nominal area 324 Maximum aipnbs size, by Rectangular sizes not exceed 324 with maximum width of Maximum damper height Installed accordance with the manufacturers installation instructions provided with the damper Maximum damper openings not to exceed 324 SC in. per 100 bs ceiling area. Prev Next Charact teristics square maximun sqft
