Mail Boss 7140 Epoch Spreader Plate, 34 X 5 X 2 in, for Use with 3 Mailboxes, 34 5 x 2&quot, Black Made of 12-gauge electro galvanized welded steel Features durable powder-coated finish Easy installation for 3 Mail Boss mailboxes on 1 Post Accommodates Mail Boss, Package Master, or Mail Manager Includes necessary hardware & clear instructions