ProGuard Seal™ Expanded Universal Closure by Lakeside Construction Fasteners allows for fast installation and conforms to various metal panel profiles creating a weather tight barrier preventing the natural outside elements from penetrating inside the building structure. LCF developed this innovative product offering as an “alternative solution" to die cut closures. With the ProGuard Seal™ Expanded Universal Closure only one product is now needed to conform around the minor/major panel contours. With our patented UV Inhibitor and Anti-Microbial Coating System this product can be exposed to direct sunlight or weather without fail!