These gutter downspout extensions are constructed from high-quality PP material instead of the more common PE. This choice provides better heat resistance and corrosion resistance, meaning they won’t fade, deform, or crack regardless of weather conditions, and they can support up to 500 lbs. The splash blocks feature a ladder-downward design that prevents dirt and water from accumulating. There’s also a 15-degree slope design that helps guide water away efficiently—even on flat ground. Additionally, a water ripple design acts as a speed bump for the water flow. The main function of these extensions is to direct rainwater away from your home. By doing this, they help prevent rainwater from eroding the house foundation, stop soil erosion, and reduce unnecessary maintenance costs. Installing them is straightforward: first, level the ground where the splash block will be placed, then secure it with the included plastic yard stakes to keep it from moving during heavy rain. Each package includes 4 downspout splash blocks measuring 16.3 in. long, 8.3 in. wide, and 2 in. high, plus 8 hard plastic stakes for stability.