Hello Roverpet,
I have attached is a photo of our latest Roverpet acquisition the Plastic Pet Puppy Whelping Boxes in use. In addition this has worked great for us and are female. For instance they are comfortable, attractive and safe for your pets. Besides these units come recommended by veterinarians and puppy breeders. Most importantly the puppy durable whelping box has a 3/4″ spacing between vertical bars. I know your dog plastic canines whelping box is stout and modular. Best of all our high quality sturdy PVC whelping box is designed to protect the litter. Therefore it reduces the danger puppies could face if they were able to roam free.  I know this PVC birthing box is where your pregnant canine will feel comfortable enough to safely have her puppies

For instance we produce the best plastic canine whelping boxes for dogs in America. I know this large pet whelping boxes comes with a non porous grade PVC that is sustainable.. Firstly all plastic dog pig rails slide into place easily, quickly and conveniently. Emphasis on easy to clean puppy pet whelping box with soap and water. Most importantly whelping puppies is a snap in a PVC Roverpet dog whelping pen.  I know they are available in white, which gives them the modern look and feel. Most importantly they are perfect for those females dogs that are expecting a litter.  For example the Roverpet Large Plastic Puppy Sturdy Whelping Boxes are made in the USA.

For instance our female was so comfortable in your Roverpet plastic canine whelping boxes, everyone commented on it. Above all else please keep the new ideas coming. For example the Roverpet puppy pen system has been wonderful to use and is very easy to set up and clean.
Thanks much,
your biggest east coast fans!!!