Thrust Restraints shall consist of high deflection, large diameter, laterally stable steel coil springs assembled into rod and angle bracket assembly. Coil springs shall have lateral spring stiffness greater than 1.0 times the rated vertical stiffness to assure coil stability. Coil springs shall provide a minimum of 50% overload deflection capability to solid capacity. Coil springs shall be epoxy powder coated. Thrust Restraints shall include threaded bracket angels, bracket back-up plated, and shall include primer painted fan and ductwork mounting Thrust Restraints shall be Model SITR as manufactured by Saketh Industries.