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What Makes The Slate Secure/Granger ISS Storm Shelters Different From All Others?
There are many different shelters available as anyone who has looked into purchasing one probably already knows. But, not all shelters are created equally and understanding some of the differences between units can help you make sound investment. The Granger ISS is a rotationally molded in-ground Polyethylene which has a half-life of 10,000 years. Unlike traditional in-ground shelters, the Granger ISS unit with its patented design is guaranteed
not to float out of the ground.
It is impervious to the elements, and able to withstand temperature changes, without cracking, non-toxic and practically
maintenance free.
Product
Estimate
Installation
• Molded 3-Step entrance
• Custom Color Doors
• Custom Molded Vent Stack
• 1/2 Inch Thick Double Wall
Polyethylene Roto-Molded
Plastic With Foam Filled
Construction
• Seats 6 Adults Comfortably
• Exceeds FEMA 320/361
Standards
• Withstands 250mph Winds and
EF5 Tornados
• Compliant with ICC 500 - 2008
Standard for Design &
Construction of Storm Shelters
• Industry leading 5 layer door
• Dual Gas Assisted Shocks
• Articulating Handrails
• 3pt. locking security Door
• LED Light
• Longest functioning life span
• No anchoring required for
typical installs
• Internationally recognized
manufacturing leader
Call today to schedule an estimate on your new
In-ground storm shelter.
We Can Install Your Shelter Anywhere In About
4 To 6 Hours Depending On Ground Conditions, Weather And Terrain.
• Lifetime Guarantee Not To
Leak, Corrode, Rust, Crack Or
Peel Like Concrete, Steel or
Fiberglass
• Can Be Installed In Existing
Landscapes Or New
Construction, Crawl Space,
Under Closet, Concrete,
Concrete Slab And/Or
Garage Slab
• Installed In-Ground. Only the
Door and Vent Are Exposed
• 10 Feet Wide By 12 Feet Long
Area Required Free Of Utilities
Seats Six Adults Comfortably