Crafted to endure challenging North American climates, WeatherPRO® Technology underlies the WeatherPRO siding block series. This range provides a weatherproof surface for receptacles, lights, switches, dryer vents, and more on exterior walls. Manufactured from polypropylene, each product includes molded rain channels directing water away. Duraflo® WeatherPRO items undergo thorough testing, boasting UV and cold-impact resistance, accompanied by industry-leading warranties.