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ELBD813 : Combination Louver
The ELBD813 Automatic Exhaust Dual Combination Damper Louver has 4" deep louver blades, .050" backdraft damper blades and a 45 degree fixed blade angle. It features:

  • 40% Free Area
  • All aluminum construction for low maintenance and high resistance to corrosion.
  • Operable blades that open at .01" w.g. static pressure.