Model C12BD-36 measures 36L x 12W x 12H and is constructed with 1 x 1/2" - 14 gauge. Like the larger 12x18 swim through Comstock Beaver Cage Trap, the 12x12 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 12x12 sized cage traps have taken beaver 50 pounds and larger. Placed on land the 12x12 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.