Air-vapor barrier box for outlets in locations that interrupt interior airtight layers). Air / vapor barrier box to seal electrical boxes when there is no service cavity between the airtight layer and the interior finish (sheetrock).
Advantages
Designed to attach to a wall or ceiling frame member and can contain up to three conventional electrical boxes
No pre-made penetrations, so penetrations can be made at any location
Bulk discounts available for full boxes (see bulk rate table for details)