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 panel. Our divider panels are designed to snuggly fit your dog crate so it is important you purchase the correct model for your model of dog crate. If you have any questions on what size / model you need our customer service department is glad to help you. MidWest customer service can be contacted at: 1-800-428-8560, available 9:00 AM - 4:00 PM, Monday - Friday. Each dog crate divider panel comes with our MidWest Quality Guarantee, 1-Year Manufacturer's *.