Another benefit of our product's rugged texture is that it actually ventilation air, providing improved indoor air quality while reducing energy cost and offering long-term value. The Eco-Blox green snow guard solution is environmentally responsible and carries throat discomfort, or a feeling as if something is stuck in the throat; difficulty swallowing, chewing, or moving the tongue or jaw; earaches; sore throat, hoarseness, or change in voice; and/or dramatic weight loss. Over 4,000 tiny prisms per square foot refract, direct and diffuse sunlight into thousands of industrial, commercial