Solid Aluminum Mezuzah Cover great for indoor and outdoor use. The opening to this case is on the bottom to prevent any water from seeping in. Remember to order a Mezuzah scroll, it is said that a Mezuzah Scroll is the superb and ideal protection you can bring to your home and work place. Have your Mezuzahs checked every few years to ensure the text on the parchment is not peeling away, Mezuzahs used outdoors need more frequent inspection due to exposure to harsh weather. Fits upto 10cm Mezuzah scrolls.