You are here: Products / Yale Door Lock-sets / Door Knob-sets Door Knob-sets Yale door knob-sets are designed in a variety of shapes to provide comfortable door opening solutions that fit your hands. These door knobs are ideal choice for economical users, offering a range of security levels, from heavy duty, to medium to standard, that support a wide range of functions from entrance to internal use. Yale door knobs also feature modern designs with a variety of finishes to suit most décor needs. Yale 5120 Series Standard Duty Cylindrical Door Knob SetThis Yale door knob range is recommended to be used on in… Yale 5280 Series Medium Duty Tubular Door Knob SetYale offers cylindrical and tubular options in medium dut… Yale 5220 Series Medium Duty Cylindrical Door Knob SetYale offers cylindrical and tubular options in medium dut… Yale 5800 Series Heavy Duty Cylindrical Door Knob SetThis Yale door knob series provides maximum security with…