Model CB39DD is a unique trap. It is designed for beavers and otters as a swim through trap to be used under water or partially under water, but can also be used in shallow water or on land. Traps perform best when set upside down under 10 inches of water and deeper. Power doors actually lift and push the animal into the trap. It weighs 23 lbs and measures 39” L x 18” W x 12” H. This is a heavy duty professional trap with two trap doors. This trap is strong, reliable, durable, and requires little maintenance. It features super strong coil springs that power the trap doors. The doors lock 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.