Aluminum. For medical material dispersal. First aid box may also be used as a poison antidote locker. Mounting clips, as shown, are located on each side and bottom of the container for bulkhead mounting. Box is watertight and has three shelves. 16-1/2" wide x 8-1/4" deep x 20" high. 14 lbs. Drawing S3702-921917. Please inquire for current manufacturing lead time prior to ordering.