XL Vinyl Mailbox Post Sleeve, 42 x 18 inches, White (Mailbox not Included)

MAILBOX NOT INCLUDED Maintenance Free and Durable PVC (Vinyl) with Lifetime Warranty Fits over existing or new wood 4x4 (actual 3.5"x3.5") post or many no-dig supports Simple to install and will NEVER lose its white color The cross-arm is 18" long across the upright. The vertical post and the height of the cross-arm is 42" from the ground Accommodates the LARGEST SIZE mailboxes available