Supco Microwave Universal Waveguide Cover, Cut-To-Fit Mica, 10" X 12", MW1012

Supco Universal Microwave Waveguide Material | MW1012 | Cut-to-Fit Mica Sheet

Protect your microwaves magnetron and restore safe operation with this brand-new Supco MW1012 waveguide cover material. Constructed from durable mica and designed to be cut-to-fit, this universal sheet replaces part number 40QBP1012 and fits a wide range of microwave models.

Product Specifications:

• Dimensions: 10" x 12" sheet


• Material: Mica (heat-resistant, non-conductive)


• Cut-to-Fit: Trim to match your original waveguide cover


• Replaces Part Number: 40QBP1012


• Condition: Brand New – Unused


• Includes: One sheet (no hardware or instructions)

Fits Microwave Models:

Universal fit for many microwave brands including GE, Whirlpool, Frigidaire, Samsung, LG, Panasonic, and more. Buyer must cut to match original waveguide shape and size.

Installation Tips:

• Disconnect power before servicing the microwave


• Use original waveguide cover as a template for trimming


• Secure trimmed cover using existing mounting tabs or clips


• Ensure cavity is clean and dry before installation


• Do not operate microwave without a properly installed waveguide cover

Installation Disclaimer:

This waveguide material is intended for use only with compatible microwave models. Buyer is responsible for verifying fitment and compatibility before purchase. Installation should be performed by a qualified technician. Returns are not accepted on cut, installed, or handled items due to contamination and safety risks.

Universal fit. Heat-resistant mica. Built for microwave safety and performance.