Mica waveguide cover for Bosch HMT72M450B, Bosch HMT75M421B, and Bosch HMT75M451B microwave ovens.

Part number:
00606320,
ASW.M76540,
49006032.

If your microwave is arcing or sparking during cooking, it may be that the waveguide cover is damaged. This metallic type material, which is a blend of mica and is invisible to microwaves, it covers the aperture that the microwaves pass through to get into the oven cavity. When old damp or contaminated can react to microwaves by arcing. 
 
Dimensions: 118 mm (including tabs) x 99 mm

Suitable for:
Bosch HMT72M450B,
Bosch HMT75M421B,
Bosch HMT75M451B.