Our whelping boxes are made from high quality birch plywood (smooth on both sides) and 15 high each. Corners Great boxes for larger dogs. Large 47" x 47" x 15 Whelping Box. The inside dimensions between PVC Pig Railing when put together are 40" wide by 40" long. 1- Door with latch so you can open or close door.
1- Basic Blue water Proof plastic liner. No tools needed to put together.