Model SPT40 is a repeating live trap with one trap door and an easy release back door designed for squirrels and other small rodent-sized animals. Repeating traps are used with excluders to create Squirrel Packs--model SPT40 is a repeating trap used for Squirrel Pack model SP40. Constructed from 1/2" x 1" - 16 gauge galvanized wire mesh, model SPT40 measures 30" x 4.5" x 4.5" and weighs 3 lbs.