Tstud's™ mission is to develop and inspire sustainable, energy efficient building solutions. The R19 and BareNaked Tstud™ offer a simple solution to impact the energy efficiency of any building structure. Previous builds have owners already saving 15%-75% on their annual HVAC costs depending on which type of insulation the owner chose. Not just annually, but for the lifetime of the structure. Build better with Tstud™. Quieter too.