Premium Pet Whelping Box with Waterproof Fertility PadProduct Description: The specially designed pen box offers a secure environment for puppies, constructed from 3mm tempered glass combined with MDF board. This construction is more durable and shatter proof than standard glass, with each panel weighing 6 pounds to ensure stability. The seamless design enhances strength, while built in puppy pig rails along the sides help prevent accidents by avoiding crushing or suffocation between the dog mom and the