The Handy Post for 4 sleeve (mailboxes not included) is constructed of maintenance-free and durable PVC (Vinyl) and comes with a Lifetime Warranty against peeling, flaking, blistering, corroding, rotting and manufacturing defects. It is designed to fit over an existing or new wood 4x4 (actual 3.5 in. x 3.5 in.) post, or can fit over many no-dig supports of similar dimensions. If your mailboxes are secured to any type of wood 4x4 configuration, you can modify it by cutting it to a straight up 52 in. H or less to accept The Handy Post for 4. The Handy Post for 4 is designed to accommodate 4 different mailboxes on 1 post. Each arm extends 25 in. from the vertical upright and will accommodate up to 50 lbs. with no sag. This aesthetically pleasing, economical product will enhance any housing, business or neighborhood property. The Handy Post for 4 will add character to any setting. Conveniently packaged with stainless steel hardware and installation instructions included.