Inventory JW Bell. 1755 I Ave NE Cedar Rapids, IA 52402 (319) 362-1151. SERVICIO EN LÍNEA; Fab Tec Screen Plants. Screen decks are constructed of 3" x 2" rectangular tubing and 1/2" x 3" FB steel to form a very strong screen deck. 6' x 16' Screen. 130 MM F.A.G. Spherical bearings specially designed for shaker screens.