Small sleeve measures 8-3/16" W x 2" H - for use with 10" x 3" mail slot.
Large sleeve measures 11-5/8" W x 2-5/8" H - for use with 13" x 3-5/8" mail slot.
For use with 1-3/4" thick door.
Installation hardware is concealed after mail slot is installed.
Use this mail slot sleeve to complete the installation of your front door mail slot. Available in two sizes, this protective sleeve will hide the raw edges of your door, which is especially useful on hollow core doors, and strengthens the installation of your mail slot.