41 13 00 Bulk Material Feeders
41 13 23.16 Apron Bulk Material Feeders
41 13 13Bin Activators/Live Bin Bottoms41 13 23Feeders41 13 23.13Airlock Bulk Material Feeders41 13 23.16Apron Bulk Material Feeders41 13 23.19Rotary-Valve Bulk Material Feeders41 13 23.23Screw Bulk Material Feeders41 13 23.26Vibratory Bulk Material Feeders41 13 23.29Volumetric Bulk Material Feeders41 13 23.33Weigh Bulk Material Feeders