4" Copper Stucco Mount Dryer Vent with Damper Perfect for dryer, bathroom, kitchen, and stove vent applications. Made of 16 ounce Copper, Hammered Copper, or Stainless Steel Connection Pipe Length is 8" (standard) Connection pipe is made of stainless steel, preventing electrolysis. Stucco mount with 7/8" Jmold