United Air Cleaner Corp. 12 Get a print! $8.00 Add to Cart Product Information: Model:12 Manufacturer:United Air Cleaner Corp. (Sentinel) Schematic Pages Page 1 Schematics Content Page 1: SENTINEL - Models 11-12-15-16 Line Voltage 115 - Volume Control Full On 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!