Air compressors; Air filters for mechanical purposes; Air filters for pneumatic controls being part of machines; Pump impellers; Pumps and compressors as parts of machines, motors and engines; Pumps as parts of machines, motors and engines; Vacuum pumps; Vacuum pumps; Compressed air pumps; Drives for vacuum pumps; Machine parts, namely, blades; all for water treatment, dental procedures, manufacturing and packing of products, none of which are used with HVAC systems

high density glass fiber air foils used in HVAC ducts for deflecting or diverting air flow