The DBX1000M Metal Dryer Outlet Vent Box with snap-on trim ring. The DBX1000M dryer outlet box enclosures are powder-coated white, 22 gauge steel, and come in two sizes 4" (For a 2x4 wall) or a 6" size. (For a 2x6 wall) This dryer vent enclosure can also be used for down venting, just simply turn the box upside down. The DBX1000M also comes with a snap-on trim ring.
Construction Solutions Dryer Outlet Vent Box, 2 x 4 in Wall