MANUFACTURED BY ISOMETRIC GENERAL RESOURCE CORPORATION. FIXED TIP, OPEN ENDED, STAINLESS STEEL ROTOR. ROTOR VANES ARE 3/4" THICK! CAST IRON HOUSING. 15" FLANGE-to-FLANGE HEIGHT. ROUND INLET, SQUARE OUTLET. VALVE CAN BE DRIVEN FROM EITHER SIDE. ORIGINALLY MANUFACTURED IN HOPKINS, MN.