Duraflo® siding blocks offer a level and weatherproof surface for installing exterior lights, dryer vents, receptacles, and switches. Our range includes double-wall recessed electrical blocks, flush electrical blocks, flat and flush mounting blocks, dryer vent blocks, light block plates, and split block plates. Crafted from durable polypropylene, all products are easy to install. The patented WeatherPRO series features molded rain channels, effectively diverting water for added safety.