Fits 1 inch PVC. Attach a flat surface to your PVC project, or secure your PVC project to a wall. This Snap Tab allows you to secure a flat surface to your PVC frame, like a wooden board, panel, plywood, wall surface, and other types of mounting surfaces. These come in handy when you want to attach PVC pipe to a wall or stud. They also work great for easily attaching paneling to your PVC frame. For example, build a PVC pitched roof greenhouse and secure polycarbonate panels by screwing Snap Tabs to the panels and then snapping it to your frame. Snap Tabs make it easy to build and then disassemble your PVC project quickly without the need to continually screw and unscrew pieces together.