America's leading underground tornado shelter

What are you looking for in a tornado shelter?

Industry leading Tornado Shelter features on America's leading Storm Shelter!

Industry Leading Innovations

The Granger ISS (Inground Safety Shelter) offers a number of industry leading features that help ensure your families near absolute protection during a storm or tornado.

Offering double wall, foam filled construction, multi-layer composite door, articulating handrails, durable poly construction that will last 1,000+ years, molded in seating and many other industry leading features are only offered by the Granger ISS Tornado Shelter.

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Installed Storm Shelter by a lake

Double Wall, Foam Filled Poly Construction

Allows the Granger ISS Tornado Shelter to be installed virtually anywhere

Interior of Storm Shleter

Safe, Tranquil Interior

Meets and exceeds FEMA 320/ICC specifications for 6 adults

Storm Shelter Door Open

Multi-layer Composite Door

meets or exceeds both FEMA 320 and FEMA 361debris impact standards

Beautiful Storm Shelter Install


minimal exposure to keep your yard beautiful and your family safe