America's leading Underground Shelter

The Granger ISS is manufactured by Granger Plastics Company located in Middletown, OH. The rotational molding company is highly lauded for its tornado shelter design and also handles custom work for a number of industries including aerospace, medical supplies, defense, agriculture and countless others. Granger Plastics Company has been in business over 20 years and holds quality and customer service in the highest regard. With unsurpassed attention to detail the manufacturing capabilities of Granger Plastics are highly sought out for projects both large and small. The full service facility includes engineering services, in house mold shop, manufacturing and secondary assembly capabilities and drop shipping. Granger Plastics Company is committed to providing solutions beyond expectations for every customer.