This dog crate divider panel fits our Midwest Homes for Pets 36-inch long folding dog crates, specifically our iCrate 1536U, 1536DDU, 1536, 1536DD & Ovation 1936. A divider panel saves you money by allowing you to adjust the size of your dog crate as your puppy grows and more importantly, allows you to properly potty train your puppy with a dog crate. Since we suggest that you purchase your dog crate for your dog's adult size, you can use the divider panel to adjust the amount of living space in the dog crate as your puppy grows. If your crate is too big when your puppy is small, he may eliminate in one corner, then go to another corner to sleep. The divider panels are available to solve this problem and help your dog learn how to "hold" their bladder longer. Please note that the divider panels fit across the width of your dog crate and a tight fit is necessary to ensure safe installation. Always remove any dog collars, leashes, leads, harnesses & apparel from your dog when using your dog crate and divider p