Storms and Tornadoes continue to cause millions of dollars of damage and destruction, while severely injuring thousands and killing hundreds of people each year. Thousands have entrusted their families safety to the Granger ISS (Inground Safety Shelter). The Granger ISS , is America's leading underground Storm Shelter innovation. Exceeding both FEMA 320 and FEMA 361 debris impact standards for both underground and above ground safe rooms, the Granger ISS Underground Storm Shelter offers industry leading proftection for single families! The Granger ISS has industry leading features such as :

Underground Storm Shelter Features & Amenities

The Granger ISS Storm Shelter features a number of options and amenities not found on most other storm shelters! The Granger ISS comes standard with a battery operated LED light, a 4" plug to help keep your air vent clean, articulating handrails, a 1/2" double wall, polyethylene construction, molded in circular seating, a multi-layer composite door that meets or exceeds FEMA 320 and FEMA 361 Debris Impact Standards!

The Granger ISS also is the only Underground Storm Shelter that features a unique, patented design that doesn't require a heavy weight anchoring system. With the ability to install directly into the ground in most situations, the Granger ISS also can be installed in high water table areas, with the right drainage provisions.

Double Wall, 1/2" thick (each wall) Polymer Construction

Lifetime warranty against cracking, leaking and floating!

Dual Gas assisted shocks for easy door opening & closing

Rotationally Molded Vent Cap

500+ year life span!

No anchoring required for typical installations!