Sterling Mfg. Co. 3A Get a print! $8.00 Add to Cart Product Information: Model:3A Manufacturer:Sterling Mfg. Co. Schematic Pages Page 1 Schematics Content Page 1: No. 3A Chassis No. 3 Power Unit (Part No. 7348A) Power Unit and Speaker Please note: we carry a wide range of products which will fulfill the specifications above. Please use our search function or browse our products to find what you need!