Maccourt 4017C Type N Window Cover

Made from durable, impact resistant plastic. They will help improve basement insulation while keeping out rain, snow and debris. Use a low profile cover when the top of the window is at or below the top of the area wall. Type N Dimension: 40" x 17" x 4" Keep out rain, snow, debris Improve basement insulation Durable, impact resistant plastic Fits 40" x 17" semicircular window well.