DESIGN DOES MATTER Behlen puts steel where it counts for outstanding strength and durability. Largest capacities in the industry better installed cost per ton. UNIQUELY DESIGNED WALL SYSTEM. * Flat-sided trapezoidal corrugation provides a superior weather seal. Wide selection of sizes to meet customer needs. EXTRA HEAVY-DUTY TENSION PIPE. * Structural eave tension/compression ring provides superior resistance to wind damage to silos, full or empty. ZZZEHKOHQJUDLQV\VWHPVFRP Behlen Mfg. Co. has been ISO registered since 1999.http://www.behlengrainsystems.com