The EZclassic also comes with a rail assembly, also known as pig rails or safety shelf. This is essential for a whelping box. The rail creates an open gap underneath the rail that puppies can be safe under. When mom comes in the box to nurse and lays down along the side, the rails help prevent mom from laying on the pups causing them injury or suffocation. Each rail assembly comes with the 4 corner pieces that each have an adjustable height leg to 3 different levels. Great to adjusting to your breed. 

Does the EZclassic Box have a hard floor? The EZclassic Whelping Boxes do not have a hard floor; however, they have a two part flooring system that is included with each box. First, the heavy duty black liner serves multiple purposes as it goes under the entire box and up the outside of the box a few inches: It will protect your floors by preventing the box from being shifted around my puppies on the inside; protect your floors from moisture as the liner is treated with a moisture resistant barrier; make the whelping box easier to clean by having a removeable floor (you don t have to take the box apart or outside to clean!). The second layer is the EZwhelp whelping pad that goes on top of the liner. These are great for absorbing liquids quickly to help prevent the spread of messes. We do recommend the purchase of extra pads to make clean up even easier. By have at least one extra pad, you can have one washing while one is in use. We recommend layering multiple cleaning pads on top of each other so that when the top pad is soiled, simply pull it out and the next one is ready to go. Changing out pads regularly will also help prevent messes from spreading to the walls panels of the box. Things get messy though. The wall panels will wipe clean easily.