Trail King's APBE 1600 External Ring Pneumatic Bulk trailer has a new external ring design that not only reduces the number of places inside the tank where product build-up can occur but, combined with a new, thicker aluminum body shell, it also increases the strength and durability of the tank. Newly designed lightweight one-piece formed aluminum support channels, both front and rear, are flame cut to conform perfectly to the tank to further optimize the strength and durability of the entire unit. At only 42-feet in length, the APBE 1600 is also one of the most compact, maneuverable pneumatic bulk trailers on the market today.