New construction can also mean remodeling. Basically there is no drywall on the studs. These Dryerboxes have a flange that mounts to the stud (in the rough) and is installed before the drywall is hung. These Dryerboxes have a "built-in" cornerbead, and do not need a secondary trim ring.
We call these Retro-Fit units as they, in most cases, can be
installed over existing drywall. Could be considered a more difficult
installation than "new construction". If the conditions are perfect and there are no obstacles, installing a retrofit Dryerbox can save the drywall replacement work. Review numerous Customer Install Pictures here.
Celebrating 20 Years of Solving Common Dryer Venting Problems
The Better Venting Company
810 Saturn Street, Suite 19
Jupiter, FL 33477-4456