Bussmann SL-20PK4

No-interchangeablility prevents installing a higher amp fuse than the circuit was designed for. Has ability to withstand typical motor starting surges. Use in residential or light-duty motor circuits. These fuses thread into SA adaptors. 4 pack 20 amps 125 volts Type SL plug fuse Size rejecting plug fuse No-interchangeablility prevents installing a higher amp fuse than the circuit was designed for Has ability to withstand typical motor starting surges Use in residential or light-duty motor circuits These fuses thread into SA adaptors Dimensions: 2.31″(L) x 2.31″(W) x 1.31″(H) UL listed Boxed.