Frame support sys supply return adapters

Frame support system supply/return adapters (PN 7738004956) are accessories that adapt supply and return connections to a Bosch frame-support assembly, streamlining alignment and secure attachment during installation. They provide a consistent mounting interface for supply/return runs, simplifying service and helping preserve correct flow orientation in packaged HVAC frames. I could not find PN 7738004956 on Bosch North America product pages; this description is a category-based summary—contact Bosch Parts for exact specs. (bosch-homecomfort.com)