This range though would not be suitable for installation in narrow corridors or walkways as the mailboxes will protrude from the wall If wall mounted. Mailboxes in this range are typically wall recessed as standard but can be wall mounted if required.
As mailboxes in this range are typically short and wide, there is a preferred limit of up to 12 units that can be stacked vertically. As a rule of thumb, the top mailbox should not exceed 1750mm from the finished floor level. The bottom mailbox should not be any lower than 500mm from the finished floor, resulting in an equivalent of 36 units per metre squared.