Model C911SD is designed for raccoon, armadillos, skunks, wood chucks, fisher, opossum and similar size animals. This is a heavy duty professional trap with one trap door. This trap is strong, reliable, durable, and requires little maintenance. It features super strong coil springs that power the trap door. The door locks into place which prevents animals from escaping, even if the trap is rolled over or flipped completely upside down. This trap is triggered by a swing bar wire trigger mechanism which allows you to capture the most trap shy animals and does not have a trip pan for animals to avoid.