Mica Waveguide cover for Sharp R28STM microwave ovens.

Part number:
252100100016,
ASW.8037792,
ASW.M76540

Dimensions: 118mm including tabs x 99mm

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.  

Suitable for:
Sharp R-28STM