Features 1) The brilliant white background is designed to enhance the numbers offering more visibility and simplicity 2) The durable, weather-resistant construction will not succumb to the outdoor elements 3) Designed to magnify the rain level in the vile for easy visibility, up to 5 inches 4) Simple to install on wall, fence, or patio with pre-configured holes 5) IMPORTANT: Turn rainfall tube upside down during freezing weather to prevent breakage