Are the 4" square vinyl posts available in black? Matt Sprague June 20, 2018 12:17 Updated Follow Unfortunately, they are not. Here are some other choices: http://www.4everproducts.com/products/sign-frames/ Related articles What are the inside dimensions are of the 3" square metal posts? I would prefer to bury my post. How does this work? What's the difference between a 36" and 47" arm on the Real Estate Posts? Comments 0 comments Please sign in to leave a comment.