durability support www.carstone.com safety carstone is proud to have passed california tb 133 tb 117 and boston rigorous fire codes for our chairs if your local government requires this stringent conformity for your safety please consult carstone for details 1 fire codes carstone utilizes a full loop of steel to support the chair back this locks the back together maintaining frame integrity their frame uses a double post back which allow the posts to flex independently this movement transfers stress to the fastening hardware ultimately resulting in failure 4 full loop back carstone offers a full ...
