This In-Ground Mounted Pedestal is made entirely of aluminum for Salsbury U.S.P.S. approved 4300 series In-Ground Mounted Pedestal for mail package drops. It's available in a powder coated black, green, silver or white finish. Mail package drops can be mounted on the optional bolt mounted (#4395) or in-ground mounted (#4385) aluminum pedestals or a base of your choice. Dimensions are: 3-1/2''W x 3-1/2''D x 48"H top: 6"W x 12''D