The Granger ISS Underground Tornado Shelter features a number of amenities that allow a family to feel safe and secure during the intense, high stress situations of a severe storm or tornado. Once inside the unit, safe and secure. The 3 point latching system offers superb protection for the consumer or family using the unit. The tranquil, white finish inside the unit allows light to illuminate the storm shelter easier, while offering a comforting white finish. The molded in seating with carpet flooring also allows for subtle comforting features for even the most anxious of occupant. The durable, double wall construction, allows for industry leading safety and security for its occupants over the typical, single wall storm shelters. Click the Shelter literature to the right to open up a larger PDF file of the Shelter features.

Granger ISS Features Gallery

In-Ground Safety Shelter

How many people fit inside the Granger ISS Storm Shelter?

8 University of Cincinnati Students inside the Granger ISS Storm Shelter

Video of a family of (7) in the Granger ISS

In the video above, watch as (7) members of a family not only check the unit to see if their family comfortably fits, but comfortably and easily exit from the Granger ISS Storm Shelter!

Tornado Shelter Doors are NOT created equal!

Granger Plastics prides themselves on practicing W. Edwards Deming methods on total quality production and improvements. Granger Plastics has now successfully designed and produced storm shelter doors that meet or exceed FEMA 320 Debris Impact standards. Granger successfully designed and tested (2) aluminum doors in years past, only to continue improvement to sucessfully innovate a new multi-layer composite door. The multi-layer composite door exceeded not only FEMA 320 debris impact standards, but also successfully completed the FEMA 361 testing for above ground safe room doors! Watch the video below to see the Granger ISS Tornado Shelter door undergo debris impact testing at the WISE lab at Texas Tech University.

Tornado Shelter Door FEMA 320/ FEMA 361 Testing

All Granger ISS Underground Shelters now come standard with the multi-layer composite door! The only multi-layer composite door that meets or exceeds both the FEMA 320 Underground Storm Shelter and Safe Room debris impact standard and the FEMA 361 Above ground Safe room Debris Impact Standard. Watch the video below, as the same storm shelter door successfully withstands both tests!

A number of underground shelter doors are designed and manufactured from inferior materials, that do not stand up to oxidation and UV rays very well. Between the break of the materials from the Ultra Violet rays and the deterioration caused by the moisture and oxidation, many of these poorly constructed and designed doors will soon become safety hazards more so than necessary protection for their underground shelters. Notice in the pictures below how other material storm shelter doors fair in everyday environments.

Steel Tornado Shelter Door Rusting Away

Fiberglass Door: A future liability issue?

If you notice in the picture above and to the right, the door has an internal shock to make opening and closing the door easier. However, due to poor design and engineering, the manufacturer has chosen to locate the shock on the interior of the door. This creates a potential safety hazard, for the occupants of the shelter. If/When the door was to be impacted, the shock could be propelled into the safe compartment of the shelter. Don't put your family's safety at risk! Ask to see the FEMA 320/FEMA 361 video and a copy of the report from the Debris Impact test facility!

Don't subject your family to potential flying projectiles INSIDE the shelter!An actual sampling of another shelters Debris Impact Test report. Would you risk it?

Storm Shelter Doors: An Educational experience

Watch, listen and learn! As the Professor gives an interesting, yet informative lesson on differences of Underground Shelter doors. Learn why the Granger ISS offers the industry's best door protection!

Custom Shelter Door Color Upgrades!

Being a rotational molding industry leader, Granger Plastics understands that sometimes colors and appearances are important. Many consumers desire the protection, safety and comfort of a leading underground tornado shelter, but sometimes, cuxtomers decor can require a custom color door. For these consumers, Granger Plastics is proud to offer custom color storm shelter door and vent cap upgrades!

Granger ISS Shelter Color Door Upgrades - Forest Green

Granger ISS Shelter Color Door Upgrades - Sandstone Granite

Granger ISS Shelter Color Door Upgrades - Solid Lt. Grey

Bullet Resistant Door Panel Upgrade

A growing number of families are looking for safety and security all throughout the country. As tough economic times continue to ravage communities, violent crimes are continuing to increase all throughout. Many families are looking to add storm and tornado protection, while having the safety and security of a panic room or safe room. The Granger ISS door is capable of a UL 752 tested Bullet Resistant panel, offering multiple levels of protection from commonly carried handguns and weapons. Ask your local Granger ISS dealer for more information about the Granger ISS Bullet Resistant door panel upgrade!

Easy Tornado Shelter entrance

Watch the video below, as the little guy in the video makes quick and easy work of entering the Granger ISS Storm Shelter. The Granger ISS features a molded, 3 step entrance with non-skid texturing molded right into the steps!

Easy Storm Shelter Installation!

In the video above, watch as All American exteriors of Metro Atlanta, Georgia installs a Granger ISS Storm shelter for a customer! A typical install requires no anchoring system and can usually be completed in around 4 hours! The Granger ISS features a PATENTED reverse taper design, which allows for fast, simple installation in most cases!

Limited Lifetime Warranty on Granger ISS

The Granger ISS Underground Shelter comes with a warranty that offers peace of mind protection. The limited lifetime warranty covers that there will be no cracking, leaking or rotting in the polyethylene structure thru the lifetime of the original owner. Proper storm shelter installation is required to validate the warranty. Units incorrectly installed in flood zones are not covered by warranty as flood zones are potential safety hazards.

Minimum Storm Shelter Maintenance

The Granger ISS features the easiest maintenance of any underground tornado shelter in the industry. This routine maintenance includes checking and or changing the batteries in the battery operated LED lighting system, every 3-6 months. Keeping the interior of the shelter clean, dry and safe as possible. Keep the door latches, hinges and components lubricated every 5-6 months. For more information about the Granger ISS Tornado Shelter warranty, please contact your Granger ISS Dealer or Granger Plastics.

Patented Storm Shelter Design!

Have you noticed that most other tornado shelters are mirror images of one another? Most all underground steel shelters look alike, while most all fiberglass units use the same basic design as most others. The Granger ISS features a PATENTED design. Not Patent Pending, Not Patent applied for, but PATENTED design. This unique, reverse taper shape is the leading underground shelter design in the industry! Don't settle for cookie cutter knock off's of inferior designs! Go with the proven leader, Granger Plastics! Granger has provided leading design and manufacturing solutions for a number of industries ranging from Aerospace, Defense, Automotive, Agri-Products, Chemicals, Material Handling and so much more! Don't risk your families safety with a company who has never designed a product, go with a proven leader- Granger Plastics!

Granger ISS Tornado Shelter Gallery

The Granger ISS image gallery contains several images of the Underground Shelter units installed, being installed or being occupied. Please click on the thumbnail image below you wish to see in the larger main image viewing area to see the Granger ISS Storm Shelter image. Below the gallery section, we have a number of videos showing features, Third Party Testing, Research and so much more! The Granger ISS is the industry leading, Storm Shelter innovation in America!