Model 601SS is our professional series live trap for squirrels, chipmunks, gophers, rats and similar size animals. This trap measures 18Lx5Wx5H. It features a very strong 1/2 x 1/2 - 16 gauge wire frame and rear easy release door. The tight mesh pattern provides extra strength and prevents critters from reaching into the trap to steal bait and also prevents animals that are trapped from reaching out of the trap and damaging property.