54" BACKDRAFT DAMPER / WALL SHUTTER,FRONT FLANGE

ITEM: BACKDRAFT DAMPER / WALL SHUTTER, FRONT FLANGE,FITS FAN DIA.: 54",SHUTTER OVERALL SIZE: 57" X 57",SHUTTER CONSTRUCTION MATERIAL: EXTRUDED ALUMINUM FRAME AND GALVANIZED TIE RODS,SHUTTER OPENING REQUIRED: 54-1/2" X 54-1/2",SHUTTER FREE AREA: 17.007 SQ. FT.,SHUTTER MOUNTING POSITION: VERTICAL,SHUTTER MOUNTING LOCATION: WALL,SHUTTER ITEM: BACKDRAFT DAMPER / WALL SHUTTER, FRONT FLANGE,FRAME DEPTH: 2-1/2",OPEN DEPTH: 5-3/4",FLANGE WIDTH: 1-1/2",MOUNTING HOLE SIZE: PREPUNCHED,MAX. VELOCITY: 2500 FPM,BLADE MATERIAL: MILL FINISH ALUMINUM,FOR USE WITH: VERTICAL MOUNTED EXHAUST FANS,NUMBER OF PANELS: 2,WEIGHT:38LBS, ORIGIN:USA