Made from a labor of love, our EZclassic whelping box is a high-quality, durable, and easy-to-use indoor dog whelping pen. It s made of strong-yet-lightweight injection-molded plastic and is easy to transport and clean. This box features walls that connect with high-strength extruded plastic posts that are tall enough to keep puppies from escaping.The EZclassic comes with a removable rail assembly that protects puppies from being smothered by their mother and has a front panel with a two-piece door that prevents puppies from escaping. The two-piece door allows you easy access to the puppies.Our dog whelping box is lined with a soft, absorbent machine-washable canvas lining and comes with a reusable pad. To clean the gate, simply wash it using detergents or bleach. The box is even a reusable home for future litters. It s available in 3 sizes to accommodate all dogs