Aleco's Exclusive MaxBullet Hardware mounting system is fast and easy to install. It eliminates the bolts, nuts, washers, and retainer bars of traditional systems. The one-piece system includes a bullet-shaped locking feature for easy strip snap-on/snap-off that requires no tools. Reduces strip replacement time by as much as 90%. Mounts on side-wall or under lintel. Lifetime guarantee on all MaxBullet hardware. The included smooth strips are for indoor or outdoor applications with temperature ranges of -10 Degree to 150 Degree F. Finished edges are rounded to prevent cupping and curling, promoting a tighter seal between strips. Specially fabricated to hang straight without warping, even in extreme temperatures. Will not discolor with exposure to sunlight.