BLOWER,BCV,18"DIA, PILLOW BLOCK BEARING,CLASS 2,ARRENGMENT 10,THD, STANDARD COATING,CW,WEATHER COVER,SHUTTER,SPARK RES TYPE A,PIEZOMETER RING,ISOLATION 1" DEFLECTION(BE-1C-150),MOTOR 5HP 1800RPM 460/6/60 EXPL - CLASS1 GROUP D & CLASS2, MOUNT