Upgrade your outdoor space with our 4 in. H x 4 in. W White Vinyl Stair Railing Kit, designed to provide both functionality and style. Crafted from durable, low-maintenance vinyl, this post skirt ensures long-lasting performance with its waterproof, fade-resistant, and non-yellowing properties, making it ideal for outdoor use. The precise dimensions of 4 in. x 4 in. x 1.30 in. H, along with inside square corners and an outside dimension of 5.49 in. guarantee a perfect fit for your vinyl posts. Specifically suitable for real 4 in. x 4 in. vinyl post cups, this skirt is not compatible with traditional 4 x 4 wood posts, so please verify the size before purchasing. Easily fits around true 4 in. x 4 in. vinyl posts without the need to dismantle the railing, making it an excellent replacement for broken base trim skirts. The 2-piece design allows for a quick and secure installation by simply snapping both ends together, providing a sturdy and reliable fit for your railing system. Available in a sleek white color, this PVC post cover enhances the aesthetic appeal of your fence or stair railing while offering practical protection against wear and tear. Transform your outdoor space with this versatile and durable vinyl stair railing kit, designed to meet all your railing needs.