rooftop duct supports in the nature of metal duct supports; rooftop solar supports in the nature of solar panel mounts made of metal; rooftop sleepers and standoffs in the nature of metal structures for mounting piping and ductwork; HVAC equipment supports in the nature of metal construction elements, namely, metal HVAC equipment supports; crossover bridges and walkways in the nature of stationary prefabricated metal bridges and walkways, rooftop seismic supports of metal for supporting piping, HVAC ducts, and cable trays; construction elements of metal, namely, rooftop cable tray supports of metal; metal sign posts, non-luminous and non-mechanical aluminum signs; non-luminous and non-mechanical roll-up signs; sign stands in the nature of metal holders for signs; guardrail barriers in the nature of metal guard barriers for highway use and crash barriers of metal; metal framing in the nature of building wall framing made primarily of metal; metal pipe clamps; metal safety grating; metal building materials, namely, prefabricated commercial storage mezzanines; rooftop safety walkways in the nature of metal building materials, namely, stationary prefabricated metal walkways and metal ceiling grids

traffic control devices, namely, safety traffic cones; lighting for traffic control, namely, electric warning lights and work zone lights in the nature of emergency warning lights, flashing and steady safety lights, and luminous beacons for safety or warning purposes; safety markers, namely, reflective fire hydrant markers in the nature of collars and shafts attached to hydrants or mounted in the ground near hydrants to indicate the position of hydrants that may be covered by snow or seasonal vegetation overgrowth; safety clothing in the nature of reflective and illuminated clothing for safety purposes

rooftop pipe supports; rooftop duct supports; rooftop solar supports; rooftop bases; rooftop sleepers and standoffs; HVAC equipment supports, crossover bridges and walkways, rooftop seismic supports; rooftop cable tray supports; sign posts, aluminum and roll-up signs, sign stands, traffic control devices, lighting for traffic control, fire hydrant markers, safety clothing, trailer mounted truck attenuators, guardrail barriers, and pavement markers; metal framing, pipe clamps, safety grating, telescopic square tubing; custom shearing and forming of steel sheets and plates; design and installation services for medical supports for X-Ray equipment, surgical lights, CT machines and medical cabinets; commercial storage mezzanines; rooftop safety walkways and unistrut ceiling grids

installation of medical equipment, namely, X-ray equipment, surgical lights, CT machines and medical cabinets