The Comstock Model C12SD-36 measures 36L x 12W x 12H and is constructed with 1″x 1/2″ – 14 gauge. Like the larger 12 x 18 swim through Comstock Beaver Cage Trap, the 12×12 is designed for beaver and otter to be used in smaller runs, tighter spots, to be placed upside down, but will perform in any position. The 12×12 sized cage traps have taken beaver 50 pounds and larger. Placed on land the 12×12 will take large raccoon, armadillos, otters, opossums, woodchucks, skunks, fishers, like size animals and even bobcats. 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.