IAP, Inc. is a premier HEAVY duty Industrial Fan manufacturing company. IAP only manufactures heavy industrial fans. Therefor ... e our primary objective is to provide heavy duty equipment without the offerings of light duty/Commercial type fans such as our competitors do. With this said, we can stay focused on the heavy duty market thus providing quality designed, and quality heavy duty Engineering practices to our products. Our offerings are as follows: Fan Types: Backward Inclined, Airfoil, Radial Tip, Radial Blade, Backward Inclined High Pressure, Forward Curved, Tube-Axial, Vane-Axial, Plug Fans. All our products are offered in all AMCA arrangements: 1,3,4,7,8,9,10 in both SW and DW. AMCA Certified Lab located at our plant in Phillips, WI. We offer 2D, 3D drawings, FEA analysis, bump tests, full product testing, mechanical run testing, etc.! IAP offers full fan accessories that will meet or exceed your fan application requirements. (Silencers, Dampers, Expansion Joints, Vibration equipment, RTD’s & Thermocouples, Actuators, etc.) Rebuild/Repair/Fan Services: Full service available for Rebuilds, Repairs, Onsite Fan services and diagnostics. read more