Accessories for fireplaces, namely, ventilation hoods for fireplaces for use in ventilation and deflecting heat from the top of a fireplace; Air filters for air conditioning units; Direct vents for gas appliances; Fans for HVAC units; Filters for air conditioning; Fireplace louvers, blowers, and dampers, and ash pans for fireplaces; HVAC units; Laboratory ventilation hoods; Oven ventilator hoods; Turbine ventilators; Ventilating louvers; Ventilation fan accessories, namely, grilles; Ventilati...