Free shipping is via stamped USPS envelope.  Other shipping methods available, but not free.

I am using this fuse in my Thermador CMT227NS, for the microwave safety circuit.  When I repaired mine, I blew multiple fuses in the process of debugging the problem.  That's why I'm selling them in lots of three fuses.  

HINTS: Google until you find the service manual.  (The manual mentions a 2 amp fuse, but it appears that, after publishing the manual, Thermador switched to this 1 amp slow-blow fuse.)  The manual describes the circuit and the conditions that can lead to a blown fuse.  CHECK THE HINGE SWITCHES.  They are referred to as "hinge interlock switch" and "failure detector switch."  One switch is normally open and the other is normally closed.  You have to pull out the unit part way, then access them by removing the outside sheet metal covers.  Over time, I had to adjust each of the two hinge switches to stop the fuses from blowing. 

Good luck!