Solve the Hole Problem!

The Stud Muffin® is an all-in-one unit for sealing abandoned concrete core holes with up to a 3 hour rating in floors. It’s design incorporates a rubber seal for restricting water, an intumescent for passive firestop protection, and a steel structure with top plate for strength. (Meets ANSI/UL1479 and IBC construction requirements.)

The Safety Muffin™ is another device within our line for covering core holes until the contractor is ready to install electrical, plumbing, or data lines. These sturdy steel covers meet OSHA requirements on the jobsite and can be used over and over again.

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Temporary Hole Covers that Meet OSHA Safety Requirements
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