Sealed N Safe, SNS Thermal Spacers, Metal Construction News, new productSNS Thermal Spacers from Sealed “N” Safe are a cost-effective and easy-to-implement thermal bridge system between the outer shell and the inner frames of a metal building. Because the SNS Thermal Spacers reduce HVAC operating costs by as much as half or more, the return on investment is between 12 and 18 months. SNS Thermal Spacers are proven safe and effective, tested per AISI, ASTM, ICC and U.S. Energy Codes and structurally sound and watertight. The company provides solutions for architectural panels, standing seam panels, through-fastened panels, wall panels and complete building envelope systems.