These doors are factory replacements for your Great Northern or Superior Popcorn Company doors. Should you need to replace your door, please determine the exact door you need BEFORE you order. This Great Northern Popcorn replacement door fits the following models: 5820, 5825, 5845, 5850, 6000, 6005, 6010, 6015, 6035, 6040, 6050, 6055, 6135, 6136, 6137, 6138. Click HERE for the Door Selection Guide. If you still have trouble determining which door you should order, please contact our Customer Service at 800-665-0728 and we will be glad to assist you in the kettle selection process.