Air Max Fans are manufactured with safety as a principal consideration. We use industrial grade steel and all products are welded by certified welders. We use 3/8 inch spaced concentric finger guards as standard equipment that meets OSHA requirements. The guards are powder coated and are attached to the fan with bolts and lock nuts. Contrast this with those of some competing models where you must pay extra for finger guards made of screen wire which are attached with sheet metal screws. All electrical components are UL^® listed.