CRL TrimQuick® Vinyl Stops are ideal for gaps less than 1/2" (12.7 mm) and can be installed quickly. For gaps larger than 1/2" (12.7 mm) and smaller than 1" (25.4 mm) you can double stack and stagger two pieces creating a beautiful stepped detail. The white finish UV protected PVC material is pre-taped on two sides. Simply peel back the protective liner, trim, and install. TrimQuick® saves time and expense as you peel, stick, caulk, and then walk away from a beautifully finished installation. This vinyl contains 10% Titanium Dioxide which is an active UV inhibitor. This is the same ingredient and amount used by vinyl window and door manufacturers. Sold individually, however, a packing charge will be added to orders fewer than five combined stock lengths.