Model CB39DD is a unique beaver 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. These beaver traps perform best when set upside down in water. The powerful doors actually lift and push the animal into the trap. This Comstock Series Beaver trap weighs 23 lbs, is constructed of 1.5" x 1.5" wire mesh and measures 39L x 18W x 12H. This is a heavy duty professional trap with two trap doors. 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. All Comstock Series Traps are made to order and manufactured on a first in first out basis. Please allow additional processing time for this item to ship. This trap can also be made with an escape door for otter and other non target animals.