SHNA spring hangers are large diameter steel springs housed in rectangular steel housings. Assembly incorporates dual (steel & Elastomer) washers for uniform load distribution and high frequency isolation. This Series features 2 sizes for different capacity ranges, offering a versatile & economic solution. Our standard design allows angular hanger misalignment. SHNA series has neoprene top element. Springs have a 50% additional travel to solid load as per the ASHRAE recommendations.Spring hangers are used for hanging fan coil units, air handling units, fans, pipes and ducts. These spring hangers are normally used for critical areas where noise and vibration both to be controlled.