white vinyl federation post skirt a true 4 inch x 4 inch | vinyl post trim | vinyl trim skirt | two-piece | will not fit a traditional 4x4 wood post (single pack) plum fittings transform a boring and dull vinyl post into a classic and stylish statement piece by adding this high-quality white vinyl federation post skirt. designed to fit 4" x 4" vinyl posts and crafted to be two-pieces that easily snap together, this post skirt will not only look great but will be easy to put together. made from durable, water-resistant white vinyl, this federation post skirt will not warp, fade, or discolor over time. fits vinyl posts externally. the total height of this post skirt is 2.460" and the corner radius is .125". this single pack is perfect for needing a replacement for an existing vinyl post as well as preparing for new outdoor projects. this vinyl post skirt will not fit a traditional 4x4 wood post. traditional 4x4 wood posts are actually 3.5" x 3.5". this post is only designed to fit true 4" x 4" vinyl post